Alternative Energy Systems LLC
hvac
Serving Royalton, MN
From Google Business Profile
4.5
26 Google reviews
Hours
| Monday | 8 AM–4 PM |
| Tuesday | 8 AM–4 PM |
| Wednesday | 8 AM–4 PM |
| Thursday | 8 AM–4 PM |
| Friday | 8 AM–4 PM |
| Saturday | Closed |
| Sunday | Closed |
Google categories: HVAC contractor
View on Google Maps →Last checked October 22, 2026.
More from Google Business Profile
Photos on Google: 28
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 · Dec 2024
These guys really know their stuff! We've been to others and were charged outrageous sums for absolutely nothing. So far, everything is straightened out and I am very pleased. I will be going to them from now on. Let's keep them in…
5 out of 5 stars · Jan 2023
Mike and Adam helped us out when our furnace quit. With being a propane user they steered us towards a heat pump to save on propane costs. They installed the heat pump and replaced our furnace on a Saturday. Honest and hard working, I…
5 out of 5 stars · Jan 2023
Mike and Adam came out to our house after our traditional furnace quit on us on one of the coldest days of the year! They acted quickly and explained to us our heating options. We decided to go with an Air Source Heat Pump which they…
The owner replied to 0 of the 5 most recent reviews Google showed.
From Google Business Profile, last checked October 22, 2026.
About hvac contractors in Royalton
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.