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.

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.



Ducted heat pumps are the perfect solution for whole-home heating and cooling using your existing ductwork. These systems efficiently move heat in and out of your home, keeping every room comfortable throughout the year. With high energy savings, quiet performance, and cold-climate capability, ducted heat pumps offer a reliable upgrade from traditional furnaces and air conditioners all in one clean, streamlined system.
Proudly serving GTA homeowners with trusted service, extended maintenance, and real local support.
Know your total cost before installation. No hidden fees just honest, transparent quotes.
You’ll always speak directly with a licensed HVAC expert never a call center or salesperson.
Same-day or next-day installs by certified technicians, done right the first time.
Upgrade your system with affordable monthly plans — no large upfront payment required.
Upgrading to a heat pump is not merely a choice for year-round comfort; it’s a commitment to a cleaner, smarter, and more energy-efficient future, expertly installed by certified professionals. At 4Most Energy, we go beyond selling equipment, we deliver comprehensive solutions, from insightful consultation and precise sizing to meticulous installation and ongoing support. Embrace consistent comfort, reduced energy bills, and an eco-friendly operation without sacrificing performance.

Stay warm in the winter and cool in the summer with one high-efficiency system designed for Ontario’s climate.
Our advanced inverter and cold-climate heat pump models provide reliable heating even at -30°C.
ENERGY STAR®-certified heat pumps can cut energy use by up to 40% compared to traditional heating and cooling systems.
Ductless and ducted options provide efficient comfort with minimal noise and space requirements.
Up to 10-year manufacturer parts warranty plus up to 10-year labour coverage from 4Most Energy for peace of mind.
Our licensed technicians ensure clean, code-compliant installation with full transparency and protection of your home.
From the first click to the cheque in your mailbox, we handle every form and follow-up. You’ll get short status updates at each milestone, so you’re always in the loop, never in the paperwork.
Below are the typical rebate ranges depending on your home’s heating system. We’ll confirm your exact eligibility based on your address, heating source, and installation type.
| Primary Heating Type | Air-Source Heat Pump | Geothermal (Ground-Source) | Notes |
|---|---|---|---|
| Electrically Heated Homes | Up to $7,500 | Up to $12,000 | Cold-climate models may be required; eligibility confirmed by 4Most Energy. |
| Natural Gas–Heated Homes | Up to $2,000 | Up to $3,000 | Rebate depends on program and model efficiency. |
| Oil-Heated Homes | Up to $10,000 (Oil to Heat Pump Affordability Program) | Income-qualified households may receive full coverage. | |
Programs and amounts may vary. 4Most Energy pre-checks your address and system to confirm the best available incentive before installation.
We’ll help you select a program-approved heat pump (ductless or ducted) and provide a transparent, code-compliant scope.
We file the paperwork for you (or guide you step-by-step) so you don’t miss eligibility windows.
4Most Energy licensed team installs, commissions, and documents your system to match program requirements.
We package receipts, serials, and commissioning reports; if an audit or inspector visit is needed, we coordinate it.
You receive your incentive by cheque or direct deposit/credit once the program approves the file.

Consider investing in a heat pump instead of an air conditioner, as heat pumps are highly efficient in providing both heating and cooling. When it comes to cooling, a heat pump can save up to 30% more energy compared to an older air conditioner. Heat pumps are equipped with a variable stage compressor, ensuring smooth and efficient cooling while effectively controlling indoor humidity during summer. On the heating side, using a heat pump provides an opportunity to reduce natural gas consumption and save more, especially as carbon taxes increase. Additionally, many heat pump systems qualify for rebates. Feel free to reach out to us for further information on rebates and heat pump systems.
A central ducted heat pump can be used if the building has existing ductwork and a furnace or an air handler. The central heat pump can replace your existing air conditioner to provide efficient heating and cooling, saving energy consumption and decreasing the carbon footprint.
The answer is yes. This system has an indoor evaporator coil on top of the gas furnace. The indoor coil can provide efficient cooling in the summer and emission-free heating in the winter, even when the outdoor temperature is as low as -30°C. These systems, also known as hybrid systems, can still work with gas as a backup.
Go Lime has been keeping homes comfortable since 2011. With over 150,000 customers across Ontario, we’ve spent more than a decade earning the trust of homeowners just like you. Partnering with trusted names like Enbridge, Home Depot, and Walmart, you can count on the Go Lime team to take care of your family.
You can replace the existing gas furnace with an electric air handler. The air handler is equipped with a variable-speed blower fan and evaporator coil that is paired with the outdoor heat pump condenser. This system offers several benefits, including fully variable fan speed, consistent heating and cooling, and 100% efficient heat even at temperatures as low as -30°C outdoors. Some popular brands for central systems with air handlers are Mitsubishi, Fujitsu, and Daikin for premium options and Moovair and Gree for more affordable choices.
Ductless heat pumps provide an alternative solution for buildings that lack ducts or a central heating system. They are also suitable for structures with boilers and radiators or baseboard electric heaters. These pumps are available in single and multi-zone options. A single-zone ductless heat pump can be used to supplement heating and cooling for specific areas where no existing system is in place or where the current system is unable to provide sufficient comfort, such as in bedrooms, second floors, building additions, separate units, or basements.
The multi-zone ductless system is designed to accommodate 2 to 8 indoor zones, depending on the capacity of the outdoor unit. Each zone in the multi-zone system is equipped with its own temperature control, offering flexibility for customized comfort throughout the home. Additionally, certain ductless heat pump systems are capable of providing heat even when the outdoor temperature drops as low as -30°C, ensuring reliable performance even in extremely cold conditions.
If you need help finding the perfect heating and cooling system for your home or want to stay updated about government incentives or rebates for heat pumps, feel free to reach out to us. We're here to help!
Yes, modern cold-climate heat pumps, including models from KingHome and Lennox, are specifically engineered to perform efficiently even in sub-zero temperatures. These systems come with advanced compressors and defrost technology to handle Ontario winters.
Heat pumps are often more energy-efficient because they move heat instead of generating it. This can significantly lower your electricity or gas bills, especially if you’re switching from baseboard heaters or an older furnace and AC system.We’ve covered the efficiency comparison in more detail in our blog on heat pumps vs furnaces and air conditioners - check it out to see which option is best for your home.
In very cold temperatures, some homes may benefit from a backup heat source, like a high-efficiency gas furnace. Many heat pumps also come with built-in auxiliary heating for extra support when needed.
Yes, all heat pumps function as air conditioners in the summer. They remove indoor heat and humidity to keep your home cool and comfortable.
Yes, many heat pumps, especially ENERGY STAR® certified models qualify for rebates in Ontario. Incentives can vary by city and utility provider, so our experts can help you check what’s available in your area and guide you through the application process.
All 4Most Energy installations include a standard 1-year labour warranty, extendable up to 10 years, plus up to 10 years manufacturer parts warranty depending on the model.
For added peace of mind, homeowners can choose 4Most Protect — our extended coverage plan designed to keep your system fully protected for years to come.
We understand that requesting a quote is the first crucial step toward a comfortable home.
Fast Response: Our dedicated team prioritizes quote requests. Expect a call or email within one business day to confirm your details.
Expert Guidance: We handle everything from high-efficiency replacements to new installations. We'll ensure the boiler we recommend is perfectly sized and meets all Ontario safety standards.
No Obligation: Submitting this form is free. We provide transparent pricing and expert advice so you can make an informed decision.
Our Heat pump expert will review your info, prepare an official estimate, and contact you within 20 minutes
kip the call centers connect directly with a certified HVAC pro for honest answers.
We’re proudly serving homes across the GTA fast response, trusted results.
Spread your cost with flexible monthly plans no surprises, just simple comfort.
Invite friends or family when they book with us, you’ll both benefit.
Protect your heat pump, boiler, or HVAC system with comprehensive coverage that gives you peace of mind.
With 4Most Protect, you’re covered for repairs, parts, and replacements, all handled by certified 4Most Energy technicians, so you can focus on what matters most.
Enjoy total comfort without the upfront cost.
With 4Most SmartPay, you can spread your payments into affordable monthly plans that fit your budget — no surprises, no hidden fees, just flexible financing designed for Ontario homeowners.



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.


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