Lennox is our top recommendation for homeowners in the Greater Toronto Area who want the highest level of reliability, quiet performance, and long-term peace of mind. Lennox furnaces are engineered for harsh Canadian winters, offering industry-leading AFUE efficiency, fully modulating burners, and some of the most durable heat exchangers in the market. Because Lennox has strong parts availability across the GTA and a proven record of long-term performance, it remains the most trusted premium brand we install.

At 4Most Energy, we understand that furnace size is crucial, and it’s measured in BTUs (British Thermal Units). Choosing the right size depends on various factors, such as your home’s square footage, ceiling height, insulation quality, and the climate in your area. An oversized or undersized furnace can lead to inefficiencies and uneven heating throughout your home. To assist you in making an informed choice, check out our detailed guide on selecting the right furnace size based on BTUs and AFUE (Annual Fuel Utilization Efficiency). Additionally, our team of expert contractors is here to provide personalized sizing assessments, ensuring you find the ideal model for your specific needs.

Goodman combines advanced Japanese-inspired technology with simple, service-friendly design, making it one of the most reliable and affordable choices in the Greater Toronto Area. Goodman units have excellent parts availability, long warranty options, and competitive pricing. Their 10-year parts warranty and lifetime heat exchanger coverage make Goodman one of the best long-term value options for homeowners looking for performance without premium pricing.

Yes — York is an excellent choice for budget-conscious homeowners who still want solid heating performance. York offers dependable efficiency, reliable operation, and strong warranty support. York also partners with several lenders, making it one of the best brands for flexible financing and zero-down payment options—perfect for homeowners in the Greater Toronto Area looking to upgrade on a budget.

Installing multiple products together (such as furnace + AC, furnace + heat pump, or furnace + tankless water heater) significantly reduces labour costs and allows us to bundle materials and installation time. This results in lower overall pricing, priority scheduling, extended warranty options, and additional savings exclusive to 4Most Energy customers. Bundle pricing can save homeowners anywhere from a few hundred to several thousand dollars, depending on the package.

Lennox: Up to 10-year parts, limited lifetime heat exchanger, and optional Comfort Shield extended protection.
Goodman: Industry-leading 10-year parts, lifetime heat exchanger warranty, and excellent extended labour coverage options.
York: Strong heat exchanger and parts warranty with upgradeable protection plans.
All 4Most Energy installations also include our 1-Year Labour Warranty, with the option to extend labour coverage up to 10 years.

An extended warranty provides added protection beyond the standard manufacturer coverage. With an extended plan, homeowners can secure up to 10 years of labour protection, ensuring that any repair, service call, or major component failure is covered. This is highly recommended for long-term peace of mind, especially in the Greater Toronto Area where winter heating demand is high.

Our installation process includes furnace sizing, a full inspection of your mechanical room, removal and disposal of the old furnace, gas-line adjustments, venting upgrades, new drain setup (if required), electrical and thermostat connection, safety testing, and performance tuning. We also protect your floors, walls, and home during installation. Every installation includes all required materials with no hidden fees.

Simply contact our furnace expert and provide a few basic details or photos of your current system. Based on the information you share, we can prepare an accurate estimate right away. If needed, we schedule a site visit to ensure everything is measured properly and there are no surprises. Our installation process is fully transparent — no hidden fees, no unexpected charges, and always a smooth, professional experience.

Yes — all furnace manufacturers require annual maintenance to keep warranties valid. Regular tune-ups ensure proper airflow, combustion safety, and high efficiency. Homeowners should also replace furnace filters every 2–3 months to prevent strain on the system and maintain clean indoor air quality.

You’re covered by our 30-day customer satisfaction guarantee. If you’re not fully satisfied, we will correct the issue immediately. If concerns cannot be resolved, we will remove the unit and follow our return policy to ensure you remain protected.

Yes — we offer 24/7 emergency furnace repair and same-day replacement service throughout the Greater Toronto Area. Homes with no heat are always prioritized, especially during extreme cold periods.