Rock Solid Heating & Cooling
hvac
Serving Johnston, IA
From Google Business Profile
4.9
68 Google reviews
Google categories: HVAC contractor, Air conditioning contractor, Service establishment, Heating contractor
View on Google Maps →Last checked October 11, 2026.
More from Google Business Profile
Photos on Google: 37
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 · May 2026 · Owner replied
I’ve used Rock Solid twice now and I can’t recommend them enough. It’s a father/son business and they are so fair with pricing and very honest. I highly recommend!
5 out of 5 stars · May 2026 · Owner replied
I just had my two 21 year old HVAC systems replaced, a 4 and a 3 ton. John and his crew did an exceptional job installing the units. The install was professionally done and it looks great. They also covered all the interior flooring space…
5 out of 5 stars · Apr 2026 · Owner replied
We began using John & Rock Solid in our Frisco home about five years ago & we love this family small business. Very upfront with what’s being serviced, what needs to be repaired, & what efforts & costs one can expect. Always know that our…
The owner replied to 5 of the 5 most recent reviews Google showed.
From Google Business Profile, last checked October 11, 2026.
About hvac contractors in Johnston
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.