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TRUSTED BY KEYSTONE, SD HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon68
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Keystone, SD

*The Angi rating for Heating And Air Conditioning Service companies in Keystone, SD 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 Keystone, SD 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 November 13, 2025

Find Heating and air conditioning pros in Keystone

Avatar for Apex Aire
Apex Aire
5.0(
6
)

Serving Keystone, SD and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade, and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

New AC and Coil install
New AC and Coil install
1 neighbors recently requested a quote
Recommended by50%of homeowners
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Avatar for Mr. Electric of the Black Hills
Mr. Electric of the Black Hills
4.8(
44
)

Serving Keystone, SD and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I was pleased with the quality of Cody’s work installing an EV charger. He was very honest. I thought I needed to upgrade my 150 amp service panel to a 200 amp panel to handle the EV charger, but when he evaluated the extra load and the panel’s current load, he told me the upgrade was not needed for the EV charger. That made the job very inexpensive."
Response time12 hrs
31 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Plumb Pro Mechanical Corp
Plumb Pro Mechanical Corp
4.8(
41
)

Serving Keystone, SD and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"Very professional, efficient, knowledgeable, friendly service. Came out in a snowstorm to fix my water line on our second bathroom. Didnâ t take long. Cost way less then we thought. Not many in our area will even look at or work on a mobile/ manufactured home but this guy did! Thank you so much. We will hire him again."
Bar Sink Faucet
Custer Hotel
YFS Mechanical Room
YFS Water Service
YFS Water Service

+9

Response time6 hrs
Recommended by100%of homeowners
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Strong Comfort Systems LLC
5.0(
2
)

Serving Keystone, SD and surrounding areas

Approved

In business since 2025

Free estimates

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with. \nCall us today you'll be pleased you did. Thank you

Response time3 days
4 neighbors recently requested a quote
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Susan Martin
New to Angi

Serving Keystone, SD and surrounding areas

Approved

Small jobs welcome

Credit card accepted

Offers commercial services

Zoe Life, LLC provides professional handyman and cleaning services tailored for rental properties and commercial office buildings in the Rapid City and Black Hills area. We understand that maintenance and cleanliness are critical to tenant satisfaction, property value, and seamless business operations.\n\nOur Specialized Services Include:\n\nHandyman Services: From routine maintenance and repairs to small renovations, we handle plumbing, electrical, drywall, painting, furniture assembly, and general fix-it tasks.\n\nCommercial & Residential Cleaning: We offer detailed turnover cleaning for rental properties and reliable janitorial services for office buildings, ensuring a clean, safe, and professional environment.\nFully insured and committed to punctuality and quality workmanship, Zoe Life is your single, trusted source for property upkeep. We help landlords and business owners protect their investments.\n\nContact us today for a free, no-obligation estimate.

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Avatar for Loyal Plumbing Heating and Cooling
Loyal Plumbing Heating and Cooling
4.6(
36
)

Serving Keystone, SD and surrounding areas

In business since 2008

Credit card accepted

Offers commercial services

"Stephen came out to the ranch to fix and replace a vent in the roof of the house. He made several trips out to the ranch. He was to kind, courteous and professional with my 90 year old mom. We could not have asked for a better professional to fix the roof. We highly recommend using Loyal Plumbing for all your household needs and fixing. Thank you so much."
A/C
Furnace
Water Heater
Response time1 day
Response rate92%
44 neighbors recently requested a quote
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Showing 1-10 of 41
Heating and Air Conditioning questions, answered by experts

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

Yes. It's not just AC filters that get dirty. Ducts can accumulate dust and dirt quickly. Insects and animals can also get into duct systems, creating many problems. Dirt build-up and unwanted guests can constrict the airflow and cause rooms not to cool evenly. You might also see higher energy bills because they're not working as efficiently.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

No. HVAC, which stands for heating, ventilation, and air conditioning, includes all of the systems that work together to regulate a building’s temperature and humidity levels. In comparison, air conditioners only provide cooling. You can have an air conditioner as part of your HVAC system, but not all HVAC systems include air conditioners.

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.

The Keystone, SD 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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