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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."
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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
25 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

The length of an AC cycle depends on the settings in your thermostat and the unit you have. Central AC doesn't constantly run at full blast the way that a window unit does. A cooling cycle in most homes is 15 to 20 minutes. Then, the unit stays off for seven to 10 minutes to circulate the cold air in the house before the cycle repeats. It should repeat two or three times per hour. A short cycle lasts less than 10 minutes and then turns off.

No, a furnace is not the same thing as an AC, or air conditioner, but these are both parts of an HVAC system. They both use air ducts to transport cool or hot air around your home to achieve a comfortable temperature set by your thermostat. An AC runs on electricity, while a furnace can use different fuel sources.

Trick question: There is no difference between an AC and a furnace blower motor. Whether you have central air and heat or just one of these, the same blower motor carries hot and cold air throughout the ductwork in your home. Certain systems may have separate blower motors for the AC and furnace, but each serves the same function.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

A dirty air conditioning coil can cause your unit to work overtime, leading to reduced efficiency, higher energy use, more wear and tear, and possible ice buildup. If the coils corrode, refrigerant can leak, causing damage, possible mold growth, and an expensive repair bill. By cleaning your AC coils once a year, you’ll have a more efficient unit that’s likely to last longer.

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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