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MacKay Heating & CoolingHVAC contractor in St. Catharines, ON

MacKay Heating & Cooling is an HVAC contractor at 2517 First Street Louth, St. Catharines, ON L2R 6P7, ranked #4 of 190 HVAC contractors in St. Catharines and rated 4.8 from 349 Google reviews. Open 24 hours a day, 7 days a week.

St. Catharines, ONUpdated 0 paid placements in any rankingHow we rank

Call (905) 688-1849Website ↗

Key facts

Key facts about MacKay Heating & Cooling
Address2517 First Street Louth, St. Catharines, ON L2R 6P7Get directions
Phone(905) 688-1849
Websitemackayheating.ca
HoursOpen 24 hours, 7 days a week
Google rating4.8 from 349 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves St. Catharines and 5 towns within 40 km: Thorold, Welland, Niagara Falls, Port Colborne and Fort Erie.

Based in St. Catharines, ONView on map

Opening hours

Opening hours for MacKay Heating & Cooling
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
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$5,460CA$8,400CA$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$3,970CA$6,770CA$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

MacKay Heating & Cooling compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
MacKay Heating & Cooling (this business)—644.8 (349)—YesYes
Mr. Furnace Heating and Air Conditioning#2674.8 (2,672)—YesYes6.0 km
Enercare#3664.6 (2,788)—YesYes4.9 km
MarZ Heating & Cooling Inc.#5635.0 (114)—YesYes7.0 km

See all 190 ranked HVAC contractors in St. Catharines

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.8from 349 Google reviews

Hired MacKay Heating & Cooling? Write a review

Questions about MacKay Heating & Cooling

How is MacKay Heating & Cooling ranked in St. Catharines?

MacKay Heating & Cooling is ranked #4 of 190 HVAC contractors in St. Catharines by CR Score, with 64 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 MacKay Heating & Cooling’s hours?

MacKay Heating & Cooling is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does MacKay Heating & Cooling serve?

Serves St. Catharines and 5 towns within 40 km: Thorold, Welland, Niagara Falls, Port Colborne and Fort Erie. 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 MacKay Heating & Cooling?

MacKay Heating & Cooling has a rating of 4.8 from 349 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 MacKay Heating & Cooling?

Call MacKay Heating & Cooling on (905) 688-1849. The business is at 2517 First Street Louth, St. Catharines, ON L2R 6P7. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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