SWERV V2 Installation and Safety Guide

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Beta Release

Version: V2.0

Date: 4/30/2026

Applies to: SWERV V2 Beta Units

Estimated installation time: 5 to 15 minutes

Tools needed:

  • Sharp kitchen knife or utility knife
  •  Cutting board (for trimming foam blocks)
  • Scissors (for cutting foam tape and foam strip)
  • Ruler or straight edge

Please read this complete guide before starting your installation.

guide before starting your installation

SWERV V2 is a window-mounted ventilation system designed to bring fresh, filtered outdoor air into your home while helping maintain indoor comfort. Unlike opening a window, SWERV uses energy recovery technology to exchange stale indoor air with fresh air while reducing the loss of heating and cooling energy.

For homeowners, renters, bedrooms, and small living spaces looking for how to improve indoor air quality without opening windows, proper installation is the first step toward getting the best performance from your unit.

1) Important Product Scope

Before installation, confirm that your window and installation location are compatible with the SWERV V2 unit.

This product is a beta / pre-production unit. Follow this installation guide carefully.

SWERV V2 is designed for:

  • Double hung windows
  • Single hung windows
  • Horizontal sliding windows

Supported window width:

23 inches to 48 inches wide

This product is a window-mounted residential appliance designed for normal indoor residential ventilation.

SWERV V2 is built to provide fresh air exchange for rooms where keeping windows open is inconvenient because of weather, outdoor noise, pollution, pollen, or energy loss. It works as a window mounted ERV installation guide solution for bringing controlled ventilation into your home without major construction.

Not Supported

Do not install SWERV V2 in:

  • Tilt-open windows
  • Casement windows
  • Awning windows
  • Doors
  • Any opening that cannot securely slide closed onto the unit

Before purchasing or installing, confirm your window type and measurements. A secure fit is necessary for proper sealing, stability, and safe operation.

You must read and accept the SWERV Paid Beta Program Agreement and the SWERV Terms and Conditions before purchase and use.

The Beta Agreement explains beta-specific risks, expectations, and responsibilities related to the product.

Important Product Scope

2) Safety Warnings (Read Before Installing)

Stop installation and contact SWERV Support if anything feels unsafe.

Proper installation is important for both performance and safety. Follow all instructions carefully before operating your unit.

Electrical and Cord Safety

  • Use only the supplied UL-listed power adapter. Do not replace it with another adapter.
  • Do not pinch, kink, cut, crush, pull, or sharply bend the power cable.
  • Route the cable so the window cannot contact or compress it.
  • Keep the adapter indoors and dry.
  • Do not handle the plug with wet hands.
  • Do not operate the unit if the cord, adapter, enclosure, or any part appears damaged.
  • If you smell burning plastic/electronics or see smoke, unplug the unit immediately and contact SWERV Support.

Support Email: support@swervair.com

Phone/Text: 585-645-3768

Window sizes and designs vary, so the exact fit may change depending on your window dimensions. Extra foam and sealing materials are provided to help improve weather sealing.

Installation Safety

During installation:

  • Be extremely careful not to drop the unit outside the window.
  • Drops are not covered under warranty and could cause serious injury to anyone below.
  • Do not open, unscrew, disassemble, or modify the unit without written approval from SWERV.
  • There are no user-serviceable parts inside the unit.
  • Do not install SWERV in broken, damaged, or unstable windows.
  • An improperly installed window unit may become loose or fall.

If the unit shifts, feels unstable, or does not appear secure:

  1. Carefully remove it from the window.
  2. Stop using the unit.
  3. Contact SWERV Support.

Operating Safety

During operation:

  • Do not cover airflow openings.
  • Do not insert objects into openings.
  • Do not operate the unit if it has been dropped, exposed to water, or shows any damage.

3) On Delivery Inspection

Before beginning installation:

Inspect the Packaging

Check the shipping box for:

  • Major damage
  • Signs of impact
  • Any visible problems during delivery

Inspect the SWERV Unit

Check the unit for:

  • Dents
  • Cracks
  • Loose parts
  • Visible damage
  • Damaged power cable or adapter

If shipping damage is present:

Do not install the unit.

Contact: support@swervair.com

Include photos of the damage so the SWERV team can evaluate the issue and determine whether replacement is required.

4) What’s in the Box

Your SWERV V2 installation kit includes:

A) SWERV Unit

The main window-mounted ERV appliance.

B) Pleated Air Filters

Filters incoming air before it enters your room.

C) Foam Side Blocks (Trim-to-Fit)

Used to create a secure fit between the SWERV unit and your window frame.

D) Foam Tape

Used for additional sealing around small gaps.

E) Foam Strip for Between Window Panes

Helps reduce drafts and improve sealing.

F) 24V Power Adapter

Provides power to the SWERV unit.

What’s in the Box

5) Approved Window Requirements

Your window must meet all of the following requirements before installation.

Your Window Must:

  • Be a sliding window in good condition
  • Be between 23–48 inches wide
  • Open and close smoothly without sticking or wobbling
  • Have a solid frame and sashes
  • Not be loose, cracked, rotted, or unstable
  • Close completely against the foam and SWERV unit

A secure window fit helps maintain stability, reduce air gaps, and improve ventilation performance.

For anyone researching how to install a fresh air ventilation system for home use, the window condition is one of the most important factors before installation.

Do Not Install If:

  • The window is damaged, loose, cracked, rotted, or unstable.
  • The unit rocks or shifts after installation.
  • The power cord would need to be stretched tightly or pinched to reach an outlet.

If the outlet location creates cord tension, use an appropriate extension cord or surge protector instead of stretching the SWERV power cable.

6) Before You Start

Before installing your SWERV V2 unit, prepare your workspace and confirm everything is ready.

A proper setup helps make installation easier, improves sealing, and reduces the chance of installation issues.

Before beginning:

1. Clear the window area and surrounding work surface.

2. Keep children and pets away during installation.

3. Plan your power cord route before placing the unit.

4. Make sure the cord will not be:

  • Pinched
  • Kinked
  • Crushed
  • Pulled tightly

You may use a surge protector or extension cord if required to safely reach the nearest outlet.

For how to install a window ERV safely at home, planning the cord route and window fit before installation helps prevent common setup problems.

Required Tools

Prepare the following tools:

  • A sharp knife at least 4 inches long (a chef’s knife is preferred)
  • Cutting board for trimming the white foam side blocks
  • Scissors for cutting foam tape and the foam strip
  • Ruler or straight edge for making accurate cuts

Having clean, straight cuts on the foam blocks is important because they help secure the unit and improve weather sealing.

7) Installation Steps

Follow each installation step carefully.

The SWERV V2 installation process is designed to be completed without major construction or professional tools when installed in an approved window.

Step 1: Unbox and Inspect

1. Remove the SWERV unit from the box and packaging.

2. Inspect the unit carefully:

  • Confirm there are no major dents or visible damage.
  • Check that the cord and adapter are intact.
  • Make sure there are no cuts, frays, or damage to the power cable.
  • Confirm nothing feels loose inside the unit.

3. Confirm all installation kit components are included.

4. Remove any masking tape from the unit.

If anything appears damaged:

Do not install the unit.

Contact SWERV Support:

Email: support@swervair.com
Phone/Text: 585-645-3768

Step 2: Open the Window

1. Open the lower window sash approximately 10 inches.

This creates enough space to position the SWERV unit into the window opening.

Before continuing, confirm the window moves smoothly and can securely close against the unit.

Open the lower window sash approximately 10 inches

Step 3: Place the Unit in the Window

  1. Check that the window screen does not block the rear of the SWERV unit.

If the screen prevents proper placement, remove it before installation.

  1. Place the SWERV unit onto the window sill in the desired position.
  2. Make sure the black rubber section extending from the bottom of the unit sits inside the lower window channel.

This provides additional stability and helps keep the unit positioned correctly.

  1. Center the SWERV unit in the window.
  2. Lower the window sash onto the unit.

The unit should sit securely and evenly before moving to the foam installation steps.

Place the Unit in the Window

Step 4: Trim the Left Foam Side Block

The foam side blocks are one of the most important parts of the installation.

A properly trimmed foam block helps:

  • Hold the SWERV unit securely
  • Reduce air gaps
  • Improve weather sealing
  • Prevent movement after installation

The foam block must be cut:

  • Straight
  • Square
  • To the correct length

Installation Process

1. Prepare your sharp knife and cutting board.

2. Hold the left foam block against the left side of the SWERV unit.

3. Check the gap between:

  • The left window frame
  • The flat face of the left foam grabber

4. Mark the location where the foam block needs to be cut.

5. Use a ruler or T-square to create a straight cutting line.

6. Place the foam block on the cutting board.

7. Cut straight along the marked line using the knife.

Try to make the cut as straight and square as possible.

A poor cut may prevent proper sealing and could affect the stability of the installed unit.
Goal

The goal is:

A square, straight foam cut that positions the SWERV unit in the center of the window with a snug fit against the window frame.

This creates a secure installation and helps block unwanted drafts.

Trim the Left Foam Side Block

Slide in the Left Foam

Step 5: Slide in the Left Foam Side Block

  1. Slide the trimmed foam block into the left-side foam grabber.
  2. Insert it from the top downward.
  3. Continue sliding until the top of the foam is even with the top of the SWERV unit.

Confirm the foam sits flat and securely before moving to the opposite side.

Step 6: Cut the Right Foam Side Block and Slide Into Place

The right foam block is extremely important because it helps lock the unit into position.

The cutting process is similar to the left foam block, but accuracy is especially important.

Installation Process

1. Prepare your knife and cutting board.

2. Push the SWERV unit completely to the left against the window frame.

3. Place the right foam block beside the unit.

4. Check the gap between:

  • The right window frame
  • The flat face of the right foam grabber

5. Mark the correct cutting point.

6. Use a ruler or straight edge to ensure the cut is square.

7. Cut the foam block straight along the marked line.

A straight and accurate cut helps prevent:

    • Weather gaps
    • Unit movement
    • Poor sealing
    • Installation instability

Cut the Right Foam Side Block and Slide Into Place

Goal

Center the SWERV unit in the window.

Create a square, straight cut through the right foam block so it fits tightly against the window frame.

This fit helps secure the unit and provides better sealing performance.

Final Check Before Continuing

After installing both foam blocks:

    • Confirm there are no large gaps.
    • Make sure the unit feels securely positioned.
    • Check that the unit does not easily tilt forward when the window is open.

If the unit feels loose:

Add foam tape on one or both sides of the foam blocks to create a tighter fit.

The foam blocks should hold the unit firmly enough that the SWERV remains flat and stable when the window is opened.

Step 7: Seal Small Gaps with Foam Tape (As Needed)

After installing both foam side blocks, check the unit carefully for any small gaps around the edges.

Proper sealing helps improve:

  • Airflow performance
  • Energy efficiency
  • Indoor comfort
  • Draft reduction

For homeowners searching how to reduce drafts around a window ventilation system, sealing small gaps correctly is an important part of the installation process.

Applying Foam Tape

  1. Apply foam tape on top of the SWERV unit and anywhere you notice small air gaps around the perimeter.
  2. Press the foam tape firmly so it adheres securely.
  3. Make sure the top surface of the black foam tape remains completely flat.

The window must close properly against the foam tape to create a secure seal.

If needed:

  • Push down harder on the foam tape.
  • Adjust the side foam blocks upward or downward.
  • Make sure the foam blocks and tape remain aligned with the top of the SWERV unit.

Installation Tip:

Better sealing usually means better performance, improved efficiency, and fewer drafts.

Seal Small Gaps with Foam Tape

Step 8: Close the Window onto the Unit

After the foam blocks and sealing tape are installed:

  1. Lower the window sash until it rests firmly against the SWERV unit and foam.
  2. Push down firmly to create a proper seal.
  3. Confirm the unit does not slide or tilt more than approximately one to two inches when applying moderate force.
  4. Make sure the unit is tilted approximately 3 degrees upward.

This slight angle allows any water that may collect inside the unit to drain toward the outside instead of pooling internally.

If the unit tilts too easily:

  1. Remove the unit from the window.
  2. . Add additional black foam tape between the white foam blocks and the window frame.
  3. 3. Reinstall the unit and close the window securely.

A properly installed unit should feel stable and remain securely positioned.

Close the Window onto the Unit

Step 9: Add Foam Strip Between Window Panes

The provided foam strip helps close the remaining gap between the upper and lower window panes.

Installation Steps

1. Insert the foam strip along the top window gap between the upper and lower panes.

2. If the window gap is too narrow:

  • Release the side locks of the window.
  • Tilt the window pane forward approximately one inch.
  • Insert the foam strip.

3. Trim the foam strip length using scissors or a knife so it fits the width of your window.

4. Push the foam strip firmly into place.

The foam strip helps improve sealing and reduce unwanted drafts.

1. Push down firmly on the window to lock the SWERV unit securely.

 2. If you notice air entering around the unit or through cracks near the window:

  • Add additional black foam tape.
  • Add extra white duct tape if needed.

A well-sealed installation supports more consistent ventilation performance.

Add Foam Strip Between Window Panes

Step 10: Optional — Install Window Locks

Window locks are sold separately through the SWERV website or local hardware stores.

Window locks provide an additional safety measure by helping reduce the chance of window movement over time.

Installation Steps

  1. Push the window down firmly onto the SWERV unit.
  2. Place the window locks on the window sill side.
  3. Tighten the locks by hand.
  4. Use the provided key to secure the locks on the window side rail.

The locks should be:

  • Tight enough that they do not move when pressure is applied.
  • Not so tight that they damage the window frame.

Confirm:

  • The window cannot open beyond the locked position.
  • The SWERV unit remains secure if someone attempts to lift the sash.
  • The locks are not damaging the window frame.

Safety Note:

Window locks help reduce the risk of unit movement, improper sealing over time, and improve overall home security.

Install Window Locks

Step 11: Route the Power Cord and Plug Into Unit

Before connecting power, carefully route the cord.

The power cable should never be:

  • Crushed
  • Stretched
  • Pinched
  • Sharply bent

Always connect the power cord to the SWERV unit first before plugging it into the wall outlet.

Correct Cord Routing

Do:

  • Route the cord so it never passes between the window sash and frame.
  • Keep only gentle bends in the cable.
  • Plug the cord into SWERV before connecting it to the wall outlet.
  • Leave extra slack in the power cable.
  • Keep the adapter dry, elevated, and visible.
  • Use a surge protector or power strip if needed to safely reach the outlet.

Incorrect Cord Routing

Do Not:

  • Pull the cord tight.
  • Plug the adapter into the wall before connecting it to SWERV.
  • Run the cord under rugs or where furniture can crush it.
  • Bend, pinch, or trap the cord.

Never route the cord where it can become damaged or compressed.

Route the Power Cord and Plug Into Unit

Step 12: Plug In and Quick Check

Once installation is complete:

  1. Plug the power adapter into the wall outlet.
  2. Turn the dial to adjust fan speed.
  3. Push the dial to change operating modes.

Confirm the following:

  • Fans run smoothly.
  • There are no unusual sounds or vibrations.
  • Airflow feels normal.
  • Fan speed changes when adjusting the dial.
  • Air direction changes when switching between indoor airflow modes.

The unit turns off when:

  • The dial is turned counter-clockwise past zero speed, or
  • The dial is pushed and held for at least 2 seconds.

If anything sounds, looks, or feels abnormal:

    1. Unplug the unit immediately.
    2. Contact SWERV Support.

Email: support@swervair.com
Phone/Text: 585-645-3768

Plug In and Quick Check

Plug In and Quick Check

Step 13: First 10-Minute Monitoring Requirement

After the first power-on following installation, remain near the unit for 10 minutes.

During this first check:

  1. Turn the dial on by either pushing or rotating it.
  2.  Adjust fan speed by turning the dial.
  3. Change operating modes by pressing the dial.
  4. Confirm all modes operate correctly.

Operating Modes

IN Mode

Blows air into your room.

OUT Mode

Moves air out of your room.

ERV Mode

The ERV mode begins by exhausting air for approximately 90 seconds to charge the energy recovery core.

After this initial cycle:

  • The unit alternates between supplying and exhausting air approximately every 45 seconds.
  • This provides energy recovery ventilation.

DUAL ERV Mode

DUAL ERV operates similarly to ERV mode, but after the initial 90-second purge cycle:

  • One side supplies air.
  • The other side exhausts air simultaneously.

This provides balanced energy recovery ventilation with effectively half the airflow compared with standard ERV mode.

Recommended Everyday Use

SWERV recommends using ERV mode for normal operation.

Choose a fan speed that provides comfortable airflow without creating unwanted noise.

Try different modes and speeds to find the setting that works best for your space.

For users researching how does an energy recovery ventilator work at home, SWERV ERV mode helps exchange indoor and outdoor air while recovering energy during the ventilation process.

Complete the 10-Minute Check

Stay present during the first 10 minutes.

Confirm:

  • No unusual heat
  • No burning smell
  • No smoke
  • No sparking
  • No unusual vibration
  • No abnormal noise

If anything unusual occurs:

  1. Unplug the unit immediately.
  2. Contact SWERV Support.

8) After Installation Checks

After completing installation, perform a final security and performance check before regular operation.

A properly installed SWERV V2 unit should feel stable, sealed, and securely positioned in the window.

Two-Minute Security Check

1. Check Unit Stability

Gently push the SWERV unit:

  • Side to side
  • Up and down

The unit should not tilt more than approximately one to two inches with light force.

If the unit moves too easily:

  1. Remove the unit from the window.
  2. Add additional foam tape to the left and right foam block areas.
  3. Reinstall and confirm a tighter fit.

2. Check Foam Sealing

Confirm:

  • Foam blocks are fully inserted.
  • Foam blocks are tight against the window frame.
  • There are no visible gaps where light can pass through.

Add additional foam or tape if needed to close any air gaps.

Proper sealing helps support better airflow performance and reduces unwanted drafts.

3. Check Power Cord Position

Confirm:

  • The power cord has enough slack.
  • The cable is not under tension.
  • The cable is not pinched or compressed.

4. Check Adapter Location

Confirm:

  • The power adapter remains indoors.
  • The adapter is kept away from water.
  • The adapter is placed in a visible and safe location.

If any installation check fails:

  1. Unplug the SWERV unit.
  2. Stop using the product.
  3. Contact SWERV Support.

9) Operating Limits and Restrictions

SWERV V2 is designed for normal indoor residential ventilation use.

Follow these operating restrictions:

  • Indoor residential use only.
  • Do not operate the unit if it has been dropped, exposed to water, or shows damage.
  • Do not cover airflow openings.
  • Do not insert objects into airflow openings.
  • Do not modify, bypass, tamper with, open, disassemble, or alter the unit.
  • Never remove screws from the unit without first contacting SWERV Support.

For homeowners looking for the best way to improve bedroom air quality without opening windows, SWERV provides controlled ventilation while maintaining the safety requirements outlined in this guide.

10) Maintenance and Filter Replacement

Regular maintenance helps maintain airflow performance and indoor air quality.

Before performing any maintenance:

  1. Turn off the SWERV unit.
  2. Unplug the power adapter.

Filter Inspection

Initially:

  • Tilt the front panel forward.
  • Check the pleated filters every 30 days.

Inspect filters for:

  • Dust buildup
  • Visible debris
  • Reduced airflow performance

Filter Replacement Schedule

Replace or clean filters:

Every 6–12 months

or sooner if noticeable dust buildup appears.

Filter replacement timing may vary depending on:

  • Indoor environment
  • Outdoor air quality
  • Usage frequency
  • Dust levels

Performance Issues

Stop using the unit and contact SWERV Support if:

  • Airflow performance decreases significantly.
  • The sound of the unit changes noticeably.
  • The unit begins operating differently than normal.

External Pre-Filter Cleaning

The removable stainless steel outside pre-filter should be:

  • Wiped clean, or
  • Washed

approximately every:

6–12 months

Regular cleaning helps maintain airflow and filtration performance.

External Pre-Filter Cleaning
External Pre-Filter Cleaning
External Pre-Filter Cleaning

11) Stop-Use Policy

Immediately stop using SWERV V2, unplug the unit, and contact SWERV Support if any of the following occurs:

  • The unit has been dropped or impacted.
  •  Any fan stops working properly.
  • The power cord or adapter becomes damaged, frayed, pinched, or crushed.
  • You smell burning plastic or electronics.
  • You notice smoke, sparks, or overheating.
  • The fan produces scraping or ticking noises.
  •  The unit begins vibrating unusually.
  • Any component becomes loose.
  • The dial no longer changes fan speed or operating modes.
  • The unit shifts, loosens, or appears unstable.
  • The window cannot close securely onto the unit.
  • Any part appears abnormal in any way.

Do not continue operating a unit that shows signs of damage or unsafe operation.

12) Support

For installation assistance, troubleshooting, or product support:

Contact SWERV

Email: support@swervair.com
Phone/Text: 585-645-3768

When Contacting SWERV Support, Include:

To help the support team resolve your issue faster, provide:

  • Order number
  • Photos of the installation and the issue
  • A short description of the problem

Providing clear photos and details helps SWERV better understand installation conditions and provide accurate guidance.

SWERV V2 Installation Complete

Your SWERV V2 unit is now ready for operation.

A properly installed unit should:

  • Remain securely positioned in the approved window
  • Maintain proper sealing around the installation area
  • Provide fresh air exchange through controlled ventilation
  • Operate smoothly without unusual sounds, movement, or damage

For users searching how does an energy recovery ventilator improve indoor air quality, SWERV V2 helps bring fresh outdoor air indoors while supporting more efficient ventilation compared with simply opening a window.

Follow this guide whenever reinstalling, checking, or maintaining your SWERV V2 unit.

FAQs

How long does SWERV V2 installation take?

SWERV V2 installation typically takes approximately 5 to 15 minutes when installed in an approved sliding window and following the included installation steps.

What type of windows work with SWERV V2?

SWERV V2 is designed for double hung, single hung, and horizontal sliding windows between 23 and 48 inches wide.

It is not designed for tilt-open, casement, awning windows, doors, or openings that cannot securely close against the unit.

Does SWERV V2 require professional installation?

No professional installation is required for approved windows. The unit is designed for straightforward installation using the included foam sealing components and basic household tools.

How does SWERV V2 improve indoor air quality?

SWERV V2 provides controlled ventilation by exchanging indoor and outdoor air while using energy recovery technology to help maintain indoor comfort.

How often should SWERV filters be replaced?

SWERV recommends checking filters every 30 days initially and cleaning or replacing them every 6–12 months depending on dust buildup and usage conditions.

Can SWERV V2 be installed in any window?

No. The window must meet specific requirements, including being a stable sliding window between 23 and 48 inches wide with a secure frame.

What should I do if my SWERV unit feels loose after installation?

Stop using the unit, check the foam block fit and sealing, add additional foam tape if needed, and contact SWERV Support if the unit remains unstable.