Johnson Heating & Air Conditioning LLC
HVAC
Serving Mason City, IA
From Google Business Profile
4.8
193 Google reviews
Hours
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
Google categories: HVAC contractor
View on Google Maps →Last checked October 4, 2026.
More from Google Business Profile
Photos on Google: 18
Recent Google reviews (excerpts)
Written by Google users, not by EdgeLocal. EdgeLocal has not verified them and does not show reviewer names.
5 out of 5 stars · Jul 2026
Great place, friendly people, I needed a part and they helped me out, thank you
5 out of 5 stars · Nov 2025
I had a water heater go out in the AM earlier this year and by mid-day they installed a new one great service. My furnace went out, two weeks ago and they came out on a weekend to troubleshoot and gave us space heaters to keep us warm…
5 out of 5 stars · Nov 2025
Had pre-winter tune-up/maintenance on our heating system. Very impressed with the knowledge & level of service from the technician. Also a bonus that he arrived right on time. Highly recommend!
The owner replied to 0 of the 5 most recent reviews Google showed.
From Google Business Profile, last checked October 4, 2026.
About this business
Johnson Heating and Air Conditioning, LLC. is a family owned and operated company in Mason City, Iowa since 1996.
Services
- heating and cooling systems
- mini-splits
- boilers
- water heaters
- service
- maintenance
- emergency HVAC support
- Air Conditioning
- Indoor Air Quality
- Furnaces
- AC Repair
- AC Installation
- HVAC Installation
- Furnace Repair
- Furnace Installation
- Boiler Repair
Service area: Clear Lake, Mason City, Northwood, Osage, Charles City, Forest City, Garner, Hampton, North Iowa
- In business since
- 1996
- Financing
- Yes
- Emergency service
- Yes
Brands and certifications: Bryant, IBC
Source: the business's own website and its Google Business Profile description, read automatically on October 14, 2026. Not verified by EdgeLocal.
About hvac contractors in Mason City
HVAC contractors install, service and repair furnaces, air conditioners, heat pumps and ductwork. HVAC contractors replace furnaces and central air conditioners, install heat pumps and ductless mini-splits, perform seasonal tune-ups, seal and balance ductwork, add humidifiers and air filtration, and respond to no-heat emergencies.
Typical cost: $5,500–$14,000 for a furnace or central AC replacement. See the full cost guide
Typical U.S. ranges from industry sources (2024–25); not EdgeLocal data. Your quote will vary with scope, materials and location.
Questions to ask this contractor
- Ask for a load calculation: A Manual J calculation sizes equipment for your actual home.
- Compare equipment line by line: Match model numbers, efficiency ratings and warranty terms across quotes.
- Verify mechanical licensing: Iowa and several neighboring states license HVAC/mechanical work.