M S Mechanical & SonsHVAC contractor in Cornwall, ON
M S Mechanical & Sons is an HVAC contractor at 800 Campbell St, Cornwall, ON K6H 6L7, ranked #7 of 24 HVAC contractors in Cornwall and rated 4.7 from 14 Google reviews. Open Monday to Saturday.
Cornwall, ONUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 800 Campbell St, Cornwall, ON K6H 6L7Get directions |
|---|---|
| Phone | (613) 931-1887 |
| Hours | Monday to Saturday: open 24 hours |
| Google rating | 4.7 from 14 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Based in Cornwall, ONView on map
Opening hours
| Day | 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 | Closed |
- Open evenings — no
- Open Saturdays
- Open Sundays — no
- Emergency service
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 converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | CA$5,460 | CA$8,400 | CA$11,350 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | CA$3,970 | CA$6,770 | CA$9,690 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Compare nearby HVAC contractors
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| M S Mechanical & Sons (this business) | — | 58 | 4.7 (14) | — | Yes | No | |
| SD&G Heating and Cooling | #5 | 59 | 5.0 (7) | — | Yes | Yes | 7.1 km |
| Casey Mechanical Inc | #6 | 58 | 4.9 (111) | — | No | No | 2.1 km |
| McKay Mechanical Inc. | #8 | 57 | 4.8 (51) | — | No | No | 2.2 km |
Reviews
ContractorsRanked reviews
No ContractorsRanked reviews yet
4.7from 14 Google reviews
Hired M S Mechanical & Sons? Write a review
Questions about M S Mechanical & Sons
How is M S Mechanical & Sons ranked in Cornwall?
M S Mechanical & Sons is ranked #7 of 24 HVAC contractors in Cornwall by CR Score, with 58 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.
What are M S Mechanical & Sons’ hours?
M S Mechanical & Sons is open Monday to Saturday. Its listed hours are Monday to Saturday, open 24 hours. On Saturdays it is open Open 24 hours and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What do Google reviews say about M S Mechanical & Sons?
M S Mechanical & Sons has a rating of 4.7 from 14 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 Mechanical & Sons?
Call M S Mechanical & Sons on (613) 931-1887. The business is at 800 Campbell St, Cornwall, ON K6H 6L7. Ask for a written estimate before any work starts.
Own M S Mechanical & Sons? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.