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TRUSTED BY SAINT JOHN, WA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon10
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Saint John, WA

*The Angi rating for Heating And Air Conditioning Service companies in Saint John, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Saint John, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on May 29, 2026

Find Heating and air conditioning pros in Saint John

Herlin Heating, LLC
4.9(
176
)
Central A/C - Service or RepairGas Boiler or Radiator Heating System - RepairElectric Furnace / Forced Air Heating System - Repair+9 more

Serving Saint John, WA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"My dad always told me to have "a guy" for everything, and Ben is definitely my guy for HVAC. He was so kind, punctual, and helpful. He explained everything thoroughly, and gave me options that the big company wouldn't even mention. I have already sung his praises to multiple friends and family."
Large commercial swamp cooler install
A broken a/c
RTU HIGH PRESSURE SWITCH LOCK OUT
New furnace
New Goodman 80% retrofit

+1

Response time9 hrs
4 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Dryer Ducks
Dryer Ducks
5.0(
88
)
Air Ducts & Vents - Clean

Serving Saint John, WA and surrounding areas

Approved

Credit card accepted

Customers say: True professional

"We had a new dryer duct installed for mother in law suite and ours repaired. Very professional and walked us through each step. Highly recommended and will use again for duct cleaning in the future."
Additional Photos
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+4

Recommended by100%of homeowners
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Avatar for Cougar Heating & Cooling
Cougar Heating & Cooling
5.0(
10
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+6 more

Serving Saint John, WA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

Cougar Heating, Air, Plumbing & Electrical has proudly served Spokane County and North Idaho since 1997. Known as the guys in the pink trucks, we deliver reliable, high-quality heating, cooling, plumbing, and electrical services with a friendly, local touch. Our experienced technicians are committed to honest recommendations, expert workmanship, and fast, dependable service for both residential and commercial customers. When comfort or safety is on the line, Cougar is the name our community has trusted for decades.

Furnace Tune Up
Furnace Tune Up
24 neighbors recently requested a quote
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Avatar for Alpina Mechanical, LLC
Alpina Mechanical, LLC
4.7(
3
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceDucts & Vents - Install or Replace+6 more

Serving Saint John, WA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"John & his brother Paul were great communicators. They came when they said they would. They were professional in all aspects of their work. We are very pleased with the install and with our minisplit system. I highly recommend Alpina Mechanical!"
Recommended by100%of homeowners
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The clean experience
New to Angi
Air Ducts & Vents - Clean

Serving Saint John, WA and surrounding areas

Approved

A clean sanitary home is the cornerstone for a healthier, happier, overall emotional well-being. When your sanctuary is clean, your mind can rest. \n Reclaim your time by letting me handle the cleaning, creating a healthier space, reducing stress, and creating a fresh welcoming environment, with more time to spend with the ones that we love! \nPeace of mind that you’re home is in capable hands, 20 years as a professional cleaner. Let me help you make it your clean happy place!\n \n \n\n

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Alpine Property Solutions LLC
New to Angi
Air Ducts & Vents - Clean

Serving Saint John, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Hi, I’m Casey, owner of Alpine Property Solutions. I’m proud to serve North Idaho with reliable, honest, and high-quality property services. Whether you need junk removal, property cleanups, skid steer work, landscaping, or fence installation and repairs, I treat every project as if it were my own.\n\nI believe in showing up on time, communicating clearly, and doing the job right the first time. My goal is to provide dependable service at a fair price while helping homeowners and businesses improve and maintain their properties.\n\nI appreciate the opportunity to earn your business and look forward to helping with your next project.

4 neighbors recently requested a quote
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Avatar for Northwest Heating & Cooling
Northwest Heating & Cooling
4.7(
24
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Saint John, WA and surrounding areas

In business since 2007

Emergency services offered

Credit card accepted

"Used this company last summer also for AC repair, very friendly and quick response.
"
Recommended by90%of homeowners
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Showing 1-10 of 49
Heating and Air Conditioning questions, answered by experts

Yes, it’s best to turn off an AC unit that’s blowing hot air to prevent system damage and avoid expensive energy bills. If you let the AC continue running, it will put more strain on the condenser coil and compressor. Plus, if the AC is blowing hot air because of a refrigerant leak, it can also lead to a frozen evaporator coil.

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. 

HVAC pros recommend that you replace your AC filter every one to three months to maintain optimal indoor air quality and ensure your HVAC system operates efficiently. However, factors such as filter type, household size, and environmental conditions may influence the frequency of replacement. Regular filter changes help prevent debris buildup, maintain airflow, and prolong the life span of your air conditioning unit.

While all portable AC units will collect moisture as part of their cooling and dehumidifying process, whether and how often you need to drain them depends on what kind of unit you have and the natural humidity levels where you live. For example, if you live in a very dry area and have a self-evaporating unit, you may not need to drain your portable AC very often at all. Some units may automatically drain collected moisture out the window through their exhaust vent.

If the air coming from your AC unit is cool but never quite cold, there are a few reasons this might be happening. For starters, it could signal that your refrigerant levels are low. If there are no other indications of this particular issue, like hissing noises or frozen refrigerant lines, anything from dirty filters to damaged condenser or evaporator coils could be responsible for the problem.

The Saint John, WA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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