Great Mills · St. Mary's County
Heating & AC Tune-Ups in Great Mills, MD
Get the heat checked in Great Mills before the first cold night.
4.9 on Google · 387 reviews
- 65
- tune-up visits in Great Mills
- 6
- in the last 12 months
- Apr
- busiest month here
- 7 mi
- from our Hollywood shop
Heating & AC Tune-Ups in Great Mills, by the numbers
Our records for Great Mills go back to 2021. Since then we've done 65 tune-up visits here, 6 of them in the last 12 months; the latest was in October 2026.
April is when Great Mills needs tune-ups from us most.
8 of the Great Mills homes in our records burn oil, which needs a new nozzle and filter each year.
5 Great Mills homes are on a Graves maintenance plan today, with a tune-up every spring and fall.
Great Mills's tune-up visits by month: Jan 1, Mar 1, Apr 16, May 8, Jun 3, Jul 1, Aug 4, Sep 5, Oct 12, Nov 10, Dec 4.
Streets where we've done tune-ups for three or more homes: Longfields Boulevard and Victoria Circle.
Great Mills sits along Great Mills Road (Route 246), between Route 5 and Lexington Park.
How it works
A full inspection and cleaning, safety controls included.
Google reviews from Great Mills
What Great Mills neighbors say
What a wonderful experience with an HVAC company. They came out next day and resolved our condensation issue quickly and effectively. John our technician was very knowledgeable and went above and beyond providing us with great service. The price was very reasonable and I highly recommend using Graves Heating and Air. We ungraded to become advantage members as we will be using them moving forward!
The technicians TJ and John were very professional. They came in and kept us informed of each step of the process as they worked, cleaned as they worked. Outstanding work.