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Foss Heating & Cooling

HVAC Companies in Mount Vernon, Washington
Ranked #3 in Mount Vernon | Grade A-
4.90 (948 reviews)

Foss Heating & Cooling

HVAC contractor based in Mount Vernon, Washington providing repair, replacement, and maintenance for furnaces, heat pumps, and complete systems. Known locally for clear communication and timely service.

Foss Heating & Cooling business photo 1 - HVAC in Mount Vernon
Foss Heating & Cooling business photo 2 - HVAC in Mount Vernon
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Foss Heating & Cooling business photo 4 - HVAC in Mount Vernon
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Why Homeowners Choose This Business

Customers frequently note straightforward communication, considerate explanations of options, and prompt scheduling during peak weather. Pricing is described as fair and transparent, with attention to neat installation and quick response on service calls Local experience that helps homeowners across Mount Vernon, Washington compare a more region-aware provider.

Service Area

Serving Mount Vernon, Washington and surrounding Skagit Valley communities.

Featured Local Business

This featured listing includes fuller business details and a stronger local presentation for homeowners comparing nearby options.

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Listing details

This listing includes service information, customer review signals, a photo gallery, and public contact details to help homeowners compare this business more easily.

Featured listings may appear with fuller business details and stronger local presentation.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.
  • Shows review activity that is competitive for this local market.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Emergency Service - Listing indicates 24-hour availability; call to confirm current response times.

Services Covered

  Renovation Services
  Furnace Repair
  Heat Pump Service
  HVAC installation
  Maintenance
  Hvac Maintenance
  Installations
  Gas Furnace Replacement
  Repairs
  Heating Repair
  AC Repair
  Ductwork Services
  Thermostat Installation
  System diagnostics
  Indoor Air Quality
  HVAC tune-up

Heating and cooling system repair, full HVAC replacement, furnace diagnostics and upgrades, heat pump service, seasonal maintenance, and start-up/commissioning support.

Reviews

Customer Reviews

Rose Ehrgott
We replaced our 30 year old gas furnace and the whole team from sales through installation and system start up were fantastic. Competitive price, and exceptional service. Great communication and professionalism. They explained the new syste…
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We replaced our 30 year old gas furnace and the whole team from sales through installation and system start up were fantastic. Competitive price, and exceptional service. Great communication and professionalism. They explained the new system to us and made sure we were comfortable with the operation of it.
Graham Armstrong
I used Foss to get a second opinion on our aged, broken furnace, and I am very glad that I did. Brett was very professional and he was able to diagnose the issue very quickly. Total repair cost was less than what another company estimated j…
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I used Foss to get a second opinion on our aged, broken furnace, and I am very glad that I did. Brett was very professional and he was able to diagnose the issue very quickly. Total repair cost was less than what another company estimated just to finish the diagnosis. I felt he was very considerate with his explanations and suggestions.
Jim Kendall
Foss performed an overhaul of our HVAC system, and we couldn’t be happier. The quality was top notch, service afterwards was immediate and efficient, and everyone was professional. Their pricing was fair and transparent, you get what you pa…
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Foss performed an overhaul of our HVAC system, and we couldn’t be happier. The quality was top notch, service afterwards was immediate and efficient, and everyone was professional. Their pricing was fair and transparent, you get what you pay for in this sector. They’re the only outfit we’ll choose in the future, thanks guys
LupinThe4th
Andre at Foss Came to our rescue with very little notice during a cold week in February. I was at work at the time and my wife was not confident to deal with the situation, but he did a great job of communicating with her and making her fee…
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Andre at Foss Came to our rescue with very little notice during a cold week in February. I was at work at the time and my wife was not confident to deal with the situation, but he did a great job of communicating with her and making her feel at ease. He kept in constant contact with me while I was at work. He was very transparent about the repairs to our very old gas heater and gave me several options to work with. He got our heat back on in time for my wife to get to her job. She later told me that if we ever need more repairs we have to get Andre again.
Cristine Cameron
I have dealt with Foss Heating for 21 years. Didn’t even price shop. Wouldn’t use anyone else. Knowledgeable; professional; polite; prompt; flexible. They did great work at my convenience and I am SO looking forward to winter with my new O…
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I have dealt with Foss Heating for 21 years. Didn’t even price shop. Wouldn’t use anyone else. Knowledgeable; professional; polite; prompt; flexible. They did great work at my convenience and I am SO looking forward to winter with my new On/Off with a switch warm, cozy fire. Happy, happy!!!!!
Oh. And they liked my dogs!!

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Special Offers

Emergency Service

Emergency service may be available for urgent issues.

Frequently Asked Questions

They handle heating and cooling systems including gas furnaces, heat pumps, and complete HVAC setups. Reviewers also describe start-up support and system walkthroughs after installation.

Their Google listing shows open 24 hours daily. Availability can vary based on demand, so calling ahead is recommended to confirm current response times.

Reviews indicate technicians provide diagnostics on older equipment and discuss repair versus replacement options. The team explains findings and helps you weigh cost, reliability, and comfort.

Customers report clear communication, tidy work, and a system walkthrough at start-up. You should receive basics on operation and any recommended maintenance steps.

You can call their main number listed on Google or visit their website to request service. Have your system details and any recent issues ready to help with scheduling.
 Verified Listing

Opening Hours

  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

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Business Details

Business Rating
4.90 (948 reviews) Featured BusinessPro Listing
Address
4101 Old Hwy 99 South Rd, Mount Vernon, WA 98273
Business Type
HVAC Contractor
Website
https://fossheating.com/
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