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Best heating and air conditioning pros near Caldwell, ID

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TRUSTED BY CALDWELL, ID HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon183
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Caldwell - Updated Nov 2026

Avatar for Diamond Heating & Cooling
Diamond Heating & Cooling
4.9(
313
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+2 more

Serving Caldwell, ID and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Credit card accepted

We have a low $79 diagnostic fee, 24/7 service with NO after hour fees for Silver Club Members. We are now offering full service electrical and plumbing in addition to our HVAC services! We provide service, maintenance and replacement on all makes and models of furnaces and air conditioners. We have wonderful Indoor Air Quality products which can help with Asthma, Allergies or even Mold. Hard work, ambition, safety, honesty and the desire to be a superior presence in a demanding business have won our reputation of quality and dependability placing us as "Your Home's Best Friend". Our company was founded on the premise that quality principles and attention to detail should be unwavering standards. Experience the Diamond Difference today!

Logo
Recommended by96%of homeowners
Avatar for No Bogus Heating And Cooling LLC
No Bogus Heating And Cooling LLC
5.0(
9
)
Gas Furnace / Forced Air Heating System - RepairCentral A/C - Service or RepairHeat Pump - Repair or Service+1 more

Serving Caldwell, ID and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"These guys are awesome. They are totally nerdy about HVAC and I love that they really tell me and actually know what's going on. I own a commercial building and have 4 HVAC units (all in different stages of disrepair) and not-a-one did I have to replace because they FIXED THEM ALL. They have already saved me thousands of dollars and they're also cool and easy to be around which is an added bonus. Highly recommend this local business!"
Indoor Unit
Outdoor unit
Response time3 hrs
Response rate92%
5 neighbors recently requested a quote
Avatar for Fix It Frankie A/C and Heating
Fix It Frankie A/C and Heating
4.9(
19
)
Central A/C - InstallGas Furnace / Forced Air Heating System - RepairCentral A/C - Service or Repair+15 more

Serving Caldwell, ID and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Fantastic service! Out of 3 inspections, FixItFrankie was the only one who got it right!!! Brandon was Very knowledgeable and found out we did not have a Freon leak! Everyone else said we did and they couldn't repair! They just wanted to sell us a whole new unit:( If your looking for Honest, Knowledgeable HVAC work, Brandon is your Guy!!!"
Residential
Residential
Residential
HVAC SYSTEMS
HVAC SYSTEMS

+1

Response time3 hrs
Response rate99%
17 neighbors recently requested a quote
Avatar for ECO HVAC
ECO HVAC
4.5(
33
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairDuctless Mini-split Heating System - Install or Replace+5 more

Serving Caldwell, ID and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Absolutely amazing! A/C stopped working. Kenny called immediately after I put in a request for service. Two hours later, not only was he there, but he had the problem resolved and my A/C back up and running. All this happened in the middle of summer with 100 degree days. I cannot thank him enough! Will definitely be using him in the future for all my HVAC needs!"
New Furnace
New Heat Pump
90% furnace
Response time5 hrs
Response rate86%
18 neighbors recently requested a quote
Avatar for Magic Electric, Plumbing, Heating + Air- Boise
Magic Electric, Plumbing, Heating + Air- Boise
4.6(
237
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+21 more

Serving Caldwell, ID and surrounding areas

Approved

In business since 2013

Emergency services offered

Warranties offered

"We had what we thought would be an easy installation of a ceiling fan in our spare bedroom/home office. With the HVAC system also near that space and the position of the fan, they had a lot of challenges that we didn't anticipate. They were very professional in explaining what they encountered, how it might impact our final cost, and what our options were. They were so prompt, courteous, and professional that we now use them for all of our electrical projects and needs including routine maintenance and checks."
Exterior Lighting
Residential Services
Ceiling Fan Install
Outlets and Switches
Whole Home Electrical Services

+2

Response time8 hrs
31 neighbors recently requested a quote
Recommended by92%of homeowners
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Showing 1-10 of 163
Heating and Air Conditioning FAQs, answered by experts

While you’ll pay more upfront for a brand-new HVAC unit, you can save money in the long run. Here’s how to save on your new HVAC system:

  • When purchasing a high-efficiency system, your energy bills will be lower in the future.

  • You may be eligible for special offers from your local energy company.

  • Depending on the system, you may be eligible for HVAC rebates and tax credits.

  • Choose to replace your air conditioning unit and furnace simultaneously to save on labor and installation costs. 

You need to know the square footage of your home first. Multiply that number by 20, which will get you the BTUs (British Thermal Units) needed to cool your home efficiently. Homes up to 1,000 square feet usually need a 1.5-ton unit; homes 1,000 to 1,200 square feet usually need a 1.75-ton unit, and homes 1,200 to 1,400 square feet usually need a 1.9-ton unit. Talk to a local pro for more specific advice on your home. 

If your home has an existing forced-air heat system, you can add a central air conditioner to it. An HVAC technician can retrofit your forced-air heating system by installing an evaporator coil onto the furnace plenum, the box next to the furnace that draws in air. Once installed, the air conditioning coils use the furnace’s blower to circulate the air.

Signs of a damaged evaporator coil include warm air from vents, frequent starts and stops without proper cooling, failure to turn on, refrigerant leaks, and unusual noises. If you suspect issues with your AC system or its components, it’s best to call an AC repair technician for proper diagnosis and repairs.

You should flush your AC drain line once every three months to keep it clear of debris and buildup. Keeping your AC drain line clean prevents clogs, backups, mold growth, and extra wear on your AC unit. If you live in a humid area or have several furry pets, up your cleaning schedule to once a month.

The Caldwell, ID 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.