Any Home. Any Season. One System.
Upgrade to a high-efficiency heat pump to heat and cool with one system, reduce energy costs, and get up to $7,500 in rebates.




Off-season pricing means the best deals of the year on high-efficiency air conditioners.

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Simple estimates, flexible payments, pro installation, and industry-leading warranties.



When you reach out to 4Most Energy, you’re connecting directly with a certified HVAC team specializing in boilers, heat pumps, furnaces, AC systems, tankless heaters, and pool heaters.
Whether you need installation, replacement, troubleshooting, or general support, our technicians are here to help quickly and professionally.
We respond based on the request you select in the form, and in most cases, you’ll hear back from us within 20–30 minutes during business hours.
For urgent issues like no heat or no hot water, you can contact us directly or request a free WhatsApp video call with our expert for instant troubleshooting.
At 4Most Energy, we’re committed to transparent service, fast response, and reliable workmanship, proudly serving the Greater Toronto Area and all major Southern Ontario cities.
We usually respond within 20 minutes during business hours. A certified HVAC expert will call or text you to confirm details and prepare an official estimate. For urgent issues, you can call us directly at 647-459-0027.
Yes, you can come to our location — but only by appointment.
4Most Energy is not a walk-in retail store, so we prepare equipment, paperwork, and technician time in advance.
If you want to pick up equipment, sign a contract, or meet in person, just contact us first so we can schedule the time, prepare the order, and make sure everything is ready for you.
For the fastest quote, include:
City or full address
Home size (approximate)
Current system type (boiler, furnace, AC, tankless, etc.)
Photos of the existing unit
Any issues or installation timeline
The more details you share, the faster we can prepare an accurate quote.
Yes — 4Most Energy provides same-day or next-day emergency service, especially during the winter season.
Please note that priority is always given to our existing customers, but we do our best to accommodate all new inquiries as quickly as possible.
Before dispatching a technician, you can also request a free WhatsApp video call with our HVAC expert for basic troubleshooting.
This service is completely free and often helps diagnose simple issues without needing a full service call.
Yes, in most cases, we can provide a full official estimate remotely.
You can send us photos and details through the online form, WhatsApp call, WhatsApp video call, text, or email.
If needed, we schedule a quick onsite visit to confirm sizing and ensure installation accuracy.
No hidden fees, no surprises — everything is confirmed before installation.
4Most Energy provides professional installation and service for boilers, pool heaters, heat pumps, furnaces, AC systems, and tankless heaters across the Greater Toronto Area and major cities in Southern Ontario.
📍 Greater Toronto Area (GTA):
Toronto • Mississauga • Brampton • Markham • Vaughan • Richmond Hill •
Aurora • Newmarket • Scarborough
📍 Extended Southern Ontario Coverage:
Stouffville • Oshawa • Barrie • Orangeville • Hamilton • St. Catharines •
Guelph • Kitchener
We offer fast service, including same-day installation, depending on availability and equipment readiness. All boiler, heat pump, and pool heater installations are done by certified technicians with full warranty support.
Greater Toronto Area:
Do you have questions about how we can help your company?
Send us an email and we’ll get in touch shortly.



Off-season pricing means the best deals of the year on high-efficiency air conditioners.

Save Big on Lennox Furnaces — Limited Time!
Get a new high-efficiency Lennox furnace with no payments for up to 6 months. Premium comfort, top-tier performance.

Simple estimates, flexible payments, pro installation, and industry-leading warranties.


Need help? Our team is just a message away