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.
HVAC Renovation
Get a free quote on your home HVAC renovation and repair project.
Ductwork and Ventilation
At 4MOST ENERGY, we specialize in HVAC services and ductwork. Whether you need to install a new HVAC system in your new home, modify an existing one, or renovate or add to an existing space, our experienced professionals have you covered.We understand the importance of having a functional and efficient HVAC system and strive to provide the highest quality services that meet your specific needs. Get in touch with us today for more information about our services and how we can help you.
Our Services in GTA
New Building Duct System Design and Implementation.Â
HVAC Renovation and solutions.
Ductwork Modification​
Bathroom and dryer ventilation.
Heat Recovery Ventilation HRV
Ductless Solution
Â
No ducts in your house? Frustrated with high hydro bills from using electric baseboard heaters?
Are you planning to build an addition to your house but don't want to run ducts?
Certain areas of your house are getting too hot or too cold despite having a central heating and cooling system?
Eliminate natural gas reliance? Let's find alternate solutions.
    One key benefit of a ductless heat pump system is that it can efficiently provide heat even when the outdoor temperature drops to as low as -30 degrees Celsius. Additionally, one outdoor unit can run up to five dedicated zones for heating and cooling. This system also offers a range of indoor units to choose from, including
High wall-mounted,
Baseboard,
Ceiling Cassette,
Air handler hiding behind the ceiling.
At 4Most Energy, we have more than ten years of experience supplying and installing ductless heat pump systems. We guarantee our service and price, and we offer a 360-day money-back guarantee if you're not satisfied with our service or the system you purchased. Contact us today to get a free quote.
Boiler and Radiator
 Renovating your house and considering removing, relocating, or upgrading the boiler
Upgrading the old cast iron radiators to modern aluminum low-profile radiators
Existing pipes are rusted and leaking, and considering changing them
Adding more radiators or zones to the system
Prioritizing and evaluating the mechanical system before starting any renovation project is important. This is particularly true if you plan to upgrade the boiler system. Upgrading the boiler system may require installing a circulation pump, adding new zones and piping, and dedicating a thermostat for each room. Doing this will ensure that your renovation project will be successful and efficient.
We have extensive experience in repair
In-Floor Heating &
Combi Boilers​
Rinnai boilers deliver reliable heating and hot water with advanced condensing technology. Available in both heat-only and combi models, they adapt to natural gas or propane and save space — perfect for new builds or retrofits. With stainless steel heat exchangers, low-maintenance design, and widely available parts, Rinnai ensures efficiency and performance. Each system includes a 15-year heat exchanger warranty, 5-year parts warranty, plus 1-year labor coverage from 4Most Energy
Why Choose Rinnai Boiler with 4Most Energy?
 Guaranteed best pricing on Rinnai boilers
 Factory-trained technicians for expert installation
 Extended maintenance plans from 4Most Energy
Need a hand?
We’re here to help.
To receive assistance, please complete the form, and our dedicated team will assist you every step of the way.
