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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon69
    Verified heating and air conditioning services reviews

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

Integrity Furnace & Duct Cleaning
4.9(
158
)
Air Ducts & Vents - Clean

Serving Annandale, MN and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"We were very impressed with Mike and his team. They were prompt, communicative and professional. We had not had our ducts cleaned for a considerable time and it showed! Integrity took before and after pictures to show their work and they did a phenomenal job. They also gave us pointers for things to watch for. We will definitely be using them again in the future and make this a part of our regular annual routine."
Response time2 days
Response rate100%
Recommended by95%of homeowners
Avatar for B & D Plumbing, Heating & A/C
B & D Plumbing, Heating & A/C
4.8(
161
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Repair+47 more

Serving Annandale, MN and surrounding areas

Approved

In business since 1982

Emergency services offered

Credit card accepted

"I thought the plumber would have the fairly standard unit I needed. He didn't, so to get it fixed I went to Home Depot and bought a good replacement while plumber removed the old unit. That worked well and he said I saved a couple of hundred so, good. I haven't paid yet, because he needs to get new seats for the old bathroom sink faucet that has a very slow leak. Need to finish that part or just call it a project and take care of the bathroom later."
Newly installed Lennox air conditioning unit.
Home without any duct work.
Newly installed Lennox furance.
Rough-In: Furnace & Air Conditioning
Broken furnace.

+79

18 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Prolific Mechanical
Prolific Mechanical
5.0(
7
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+20 more

Serving Annandale, MN and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Thomas and the team at Prolific Mechanical did an outstanding job installing our new boiler. They were professional, knowledgeable, and paid close attention to every detail. The installation was clean, completed on time, and everything has been working flawlessly. I highly recommend Prolific Mechanical to anyone looking for honest, high-quality HVAC work."
Avatar for DJ's Home Services
DJ's Home Services
4.5(
103
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service+9 more

Serving Annandale, MN and surrounding areas

Approved

Super Service Award Winner

In business since 1971

Emergency services offered

Warranties offered

"We met serviceman Alex L. from DJ's today. He worked as long as it was necessary to diagnose and fix issues with our furnace humidifier. It needed several adjustments. He worked very diligently and the price was reasonable (especially by today's standards for pricing). We would definitely hire DJs again for other HVAC and plumbing work. We also appreciated the company's thoroughness in providing reminder calls and other contact on the day of service to ensure we met Alex at our home at the right time. This shows an emphasis on customer service that we appreciate. Both Charlotte and Karen were very helpful to us on the phone today as well."
DJs Air Conditioner
DJs Furnance
DJs Boiler Repair
DJs Drains
DJs Electrical Panel

+40

Response time1 day
Response rate97%
20 neighbors recently requested a quote
Avatar for Randy's Electric & Plumbing
Randy's Electric & Plumbing
4.4(
403
)
Electrical Baseboard or Wall Heater - Repair

Serving Annandale, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Emergency services offered

Warranties offered

"Every technician needs knowledge and the right tools; Chris from Randy’s Electric had both. He quickly diagnosed the problem and repaired a faulty connection amidst a daisy chain of electrical connections that had rendered several outlets inoperable. I recommend this company."
Team Work Makes the Dream Work
We Listen
Kitchen Lighting
Out with the OLD in with the NEW!
Full Trucks

+5

Response time8 hrs
1098 neighbors recently requested a quote
Recommended by84%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

No, not all HVAC systems have a fresh air intake, but there are many advantages to having one. For example, a fresh air intake can boost the air quality inside your home and help your furnace run more effectively. Plus, it can make your house more energy efficient, possibly saving you money on your utility costs.

The $5,000 rule for HVAC systems helps homeowners decide whether to repair or replace an AC or furnace. Take the quote for the HVAC repair cost and multiply that by the age of the HVAC system. If the total is higher than $5,000, it’s more cost-effective to replace the system. If the total is lower than $5,000, consider repairing the system.

As a general rule, you should have your HVAC system professionally serviced at least once a year, though it's best to follow the manufacturer's specific recommendations. Many experts suggest twice-yearly maintenance: once in the spring for the cooling system and once in the fall for the heating system. This is especially recommended for older units, systems with recurring issues, or heat pumps that provide both heating and cooling. Regular service, which can cost between $100 and $550, keeps the system running efficiently, helps prevent costly future repairs, and saves money on utility bills.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

While your AC unit may still run even if its capacitor is going bad, doing so takes a lot more energy, so it can drive up your electric bill and cause further damage to your AC unit’s parts. If you suspect a bad capacitor, it’s important to have a professional diagnose and fix the problem before you continue to run your AC.

The Annandale, MN 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.