M.S. Johnston CompanyHVAC contractor in Hagerstown, MD
M.S. Johnston Company is an HVAC contractor at 13265 Pennsylvania Ave, Hagerstown, MD 21742, rated 4.6 from 9 Google reviews. Open Monday to Friday.
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Key facts
| Address | 13265 Pennsylvania Ave, Hagerstown, MD 21742Get directions |
|---|---|
| Phone | (301) 733-1066 |
| Website | msjohnston.com |
| Hours | Monday to Friday: 8 AM – 4:30 PM |
| Google rating | 4.6 from 9 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Serves Hagerstown and 6 towns within 25 miles: Fountainhead-Orchard Hills, Robinwood, Halfway, Thurmont, Walkersville and Frederick.
Based in Hagerstown, MDView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 8 AM – 4:30 PM |
| Tuesday | 8 AM – 4:30 PM |
| Wednesday | 8 AM – 4:30 PM |
| Thursday | 8 AM – 4:30 PM |
| Friday | 8 AM – 4:30 PM |
| Saturday | Closed |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays — no
- Open Sundays — no
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range | $3,887 | $5,978 | $8,073 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range | $2,823 | $4,814 | $6,896 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Questions about M.S. Johnston Company
What are M.S. Johnston Company’s hours?
M.S. Johnston Company is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What areas does M.S. Johnston Company serve?
Serves Hagerstown and 6 towns within 25 miles: Fountainhead-Orchard Hills, Robinwood, Halfway, Thurmont, Walkersville and Frederick. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.
What do Google reviews say about M.S. Johnston Company?
M.S. Johnston Company has a rating of 4.6 from 9 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact M.S. Johnston Company?
Call M.S. Johnston Company on (301) 733-1066. The business is at 13265 Pennsylvania Ave, Hagerstown, MD 21742. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
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