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.

We Are Proud to Partner With

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.

A.O. Smith® BTH-250 Cyclone® 100 gal Mxi Commercial Gas Water Heater

Original price was: $18,950.00.Current price is: $16,990.00.

The "Zero-Downtime" Solution for High-Demand Commercial Properties

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Air MAX High Velocity Air Handlers

Price range: $3,112.00 through $3,252.00
MAXAIR™ Fan Coil – Mini Ducted Air Handler Models: MAXAIR™ 30 / MAXAIR™ 50 / MAXAIR™ 70 / MAXAIR™ 100
Select options This product has multiple variants. The options may be chosen on the product page

ClimateMaster 816 Replacement Omega Condo Heat Pump

The Omega 816 Series are a direct replacement for ClimateMaster 816 units. The chassis is a direct drop-in for the existing ClimateMaster unit, allowing for a fast, simple and easy installation. Available in various electrical configurations and 2 water connection configurations based on replacement requirements.
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Hayward 60,000 BTU Variable Speed Heat Pump, Titanium Exchanger

$2,838.00
Hayward heat pumps are the perfect addition to your swimming pool. They provide the perfect water temperature, even under the
Select options This product has multiple variants. The options may be chosen on the product page

Rinnai IP120S Heat Only Boiler 120,000 BTU I-Series Plus

$3,480.00
Get the Rinnai IP120S installed by 4Most Energy experts. A 120k BTU, 96% efficient powerhouse featuring built-in zoning for maximum savings.
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Rinnai IP150S Heat Only Boiler 150,000 BTU I-Series Plus

$3,690.00
At 4Most Energy, we proudly serve homeowners across the GTA and surrounding areas, delivering reliable heating solutions that combine efficiency,
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Rinnai IP090S Heat Only Boiler 90,000 BTU I-Series Plus

$3,380.00
At 4Most Energy, we proudly serve homeowners across the GTA and surrounding areas, delivering reliable heating solutions that combine efficiency,
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Rebates Made Easy, We Do All The Heavy Lifting

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.

1. Place Your Order

Complete checkout for your Hybrid AC, then snap a few photos of your current HVAC setup when our customer-service team calls you. (Takes about two minutes.)

2. Pre-Approval Filed For You

As soon as we receive your photos, we submit your pre-approval to the Home Renovation Savings Program—always within 1–2 business days. ⏳ Typical program approval: 7–10 business days.

3. Schedule & Install

Once the approval lands, we’ll call to lock in an installation date that fits your calendar. Our certified techs handle a clean, code-compliant install.

4. Final Submission

After installation, we upload all photos and documents to finalize your rebate claim. You’ll receive a “Rebate Filed” confirmation.

5. Cheque Arrives

The program provider mails your rebate—up to $7,500—straight to your door. We’ll alert you when it’s on the way. 🎉

Repairs Happen. Go Protect Keeps You Covered.

Protect your heat pumps with coverage that ensures peace of mind. Go Protect has got you covered for repairs or replacements, so you can focus on what matters.

Flex Your Budget With Go Flex

Enjoy comfort on your terms with Go Flex- our flexible payment option that lets you spread out the cost of your equipment and service. No large upfront payments, no surprises, just predictable monthly plans that work with your budget.

Frequently Asked Questions

Does my monthly price ever go up?

Our pricing isn’t a flashy promotional rate - it’s fair and transparent from the start. Over time, there may be minor adjustments to ensure you continue receiving top-notch service. But don’t worry - we’re talking about just a dollar or two per year at most. No surprises, just straightforward savings. Plus, you can purchase the equipment at any time, giving you ultimate savings and flexibility.

What happens if I move?

Moving? No problem. Our Go Flex plan is fully transferable to the next homeowner, allowing them to seamlessly pick up where you left off. Just let us know 30 days before your move, and we’ll handle the rest. We’re here to make your move hassle-free, just the way it should be.

What is the warranty with my purchase?

With the Go Flex Program, you’re 100% covered—24/7/365—for both parts and labour, including annual maintenance. If you choose to purchase the equipment, you’ll receive the standard manufacturer’s warranty. Start with the Go Flex Program to enjoy all the benefits we offer, and when you’re ready, you can purchase the equipment at your convenience.

How long have you been in business?

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.

Is Go Flex a rental, and what is the term?

Go Flex isn’t a never-ending rental contract. It’s a game-changer: an industry-first flexible 180-month subscription with an anytime purchase option. Here’s how it works: 50% of your monthly payment reduces your purchase price, while the other 50% covers 24/7 service, annual maintenance, and unlimited parts and labour coverage. You get all the perks of ownership without the headaches—and the flexibility to purchase the equipment at any time.

What is a heat pump and how does it work?

A heat pump is a high-efficiency system that can both heat and cool your home. In winter, it extracts heat from the outside air and brings it indoors. In summer, it works in reverse removing heat from inside your home to cool it down.

Can heat pumps work in cold Canadian climates?

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.

Are heat pumps more efficient than furnaces or air conditioners?

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.

Do I need a backup heating system with a heat pump?

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.

Do heat pumps provide air conditioning too?

Yes, all heat pumps function as air conditioners in the summer. They remove indoor heat and humidity to keep your home cool and comfortable.

Are there rebates available for installing a heat pump?

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.

Can a heat pump help reduce my carbon footprint?

Yes, because they run on electricity and don’t burn fuel, heat pumps produce fewer greenhouse gas emissions than traditional gas systems. If paired with green energy, they can help make your home much more eco-friendly.

How It Works Simple From Start to Finish

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Enjoy Worry Free Comfort

Why 4Most Energy Is Ontario’s Trusted Choice for Home Comfort

Local & Reliable

Proudly serving GTA homeowners with trusted service, extended maintenance, and real local support.

Clear, Upfront Pricing

Know your total cost before installation. No hidden fees  just honest, transparent quotes.

Expert Advice, Not Sales Talk

You’ll always speak directly with a licensed HVAC expert never a call center or salesperson.

Fast, Professional Installation

Same-day or next-day installs by certified technicians, done right the first time.

Flexible Financing Options

Upgrade your system with affordable monthly plans — no large upfront payment required.

Make Comfort Affordable With Easy Financing

⁠No Upfront Payment

Instant Approval

Flexible Monthly Plans

4 Most Energy

We Plant Goodness

Every order supports reforestation. For each purchase made, we plant a tree because real change starts with simple actions. Place an order, and we’ll plant a tree on your behalf.

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    Spread your cost with flexible monthly plans no surprises, just simple comfort.

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    Invite friends or family when they book with us, you’ll both benefit.