Residential Gas & Electric Furnaces

Selecting the appropriate gas furnace size involves calculating your home's heating requirements, measured in British Thermal Units (BTUs). Factors influencing this calculation include your home's square footage, insulation quality, ceiling height, number of windows, and local climate. An HVAC professional can perform a Manual J load calculation to determine the precise furnace size needed for optimal efficiency and comfort.

Similar to gas furnaces, sizing an electric furnace requires assessing your home's heating load. This involves evaluating factors such as square footage, insulation levels, window types, and regional climate conditions. Consulting with an HVAC specialist is recommended to perform a Manual J load calculation, ensuring the selected furnace meets your home's specific heating demands.

The cost of a new furnace varies based on factors like type (gas or electric), efficiency rating, brand, and installation complexity. On average, homeowners can expect to spend between $4,000 and $8,000 for a new furnace, including installation. High-efficiency models or those with advanced features may be priced higher. It's advisable to obtain quotes from reputable suppliers to get an accurate estimate tailored to your needs.

Furnace longevity depends on factors such as make, model, fuel type, installation quality, usage, and maintenance. Generally:

• Gas Furnaces: 15 to 25 years
• Electric Furnaces: 20 to 30 years

Regular maintenance, including annual professional inspections and timely filter replacements, can extend the lifespan of your furnace.

Indicators that it may be time to replace your furnace include:

• Age: The unit is approaching or exceeding its expected lifespan.
• Frequent Repairs: Increased frequency and cost of repairs.
• Rising Energy Bills: Unexplained increases in heating costs.
• Inconsistent Heating: Uneven temperatures or difficulty maintaining desired warmth.
• Strange Noises: Unusual sounds such as rattling, buzzing, or humming.
• Visible Signs of Wear: Rust, cracks, or corrosion on the unit.

When selecting a new furnace, consider the following:

• Efficiency Rating (AFUE): Higher ratings indicate better energy efficiency.
• Fuel Type: Choose between gas, electric, oil, or propane based on availability and cost.
• Size/Capacity: Ensure the furnace meets your home's heating requirements.
• Features: Look for options like variable speed blowers, multi-stage burners, and compatibility with smart thermostats.
• Installation Quality: Proper installation is crucial for optimal performance and longevity.
• Warranty: Review the manufacturer's warranty for coverage details.

It's recommended to schedule furnace maintenance annually, preferably in the fall before the heating season begins. Regular maintenance helps identify potential issues early, ensures efficient operation, and extends the lifespan of your furnace.

The frequency of filter changes depends on factors like filter type, household size, presence of pets, and indoor air quality. General guidelines are:

• Homes without pets: Every 90 days
• Homes with one pet: Every 60 days
• Homes with multiple pets or residents with allergies/asthma: Every 20-45 days

Regularly checking the filter's condition can help determine if more frequent changes are necessary.