Furnace Looking Ancient? Call Us Before It Joins the Dinosaurs.

Signs a Furnace Repair Is Needed

Is your furnace running but not keeping your home warm? Strange noises, cold spots, or unexpected energy bill spikes could all point to a heating issue.

Here are some of the most common signs your furnace needs service:

• Uneven heating or thermostat issues – If your home isn’t reaching the temperature you’ve set, the problem could be with the furnace or the thermostat.
• Rising energy bills – A sudden spike could mean your furnace is working harder than it should, often due to a dirty filter, failing parts, or lack of maintenance.
• Unusual sounds – Banging, rattling, or squealing noises could indicate a failing motor, loose components, or a clogged burner.
• Short cycling – If your furnace keeps turning on and off frequently, it may be overheating, have a clogged filter, or a faulty flame sensor.
• Water or moisture around the furnace – Condensation leaks can indicate a blocked drain line or secondary heat exchanger issues in high-efficiency units.

If you’re experiencing any of these furnace problems, call True Blue Home Services for expert heating repair in St. Charles, St. Louis, and surrounding areas. Our friendly techs will diagnose the issue quickly and get your heat running reliably again.

Furnace Replacement

Warning Signs Your Furnace May Need Replacement

While repairs can fix many heating problems, sometimes it’s more cost-effective—and safer—to replace your furnace. Here’s when it might be time to consider a new unit:

• Your furnace is 15 years or older – Most furnaces have a life expectancy of 15–20 years. If yours is approaching this range, it may be time to upgrade.
• Frequent breakdowns or costly repairs – If you’re calling for repairs every season, the long-term cost may outweigh the price of a new system.
• Inconsistent heating or cold spots in the home – Older systems may struggle to heat evenly, especially in two-story homes or during extreme cold.
• Unusual smells or poor air quality – This could be a sign of worn components or poor combustion.
• Rising energy bills – Older furnaces lose efficiency, which means more energy is needed to heat your home.

Extending the Life of Your Furnace

Want to avoid early replacement? Here’s how:

• Schedule annual furnace maintenance
• Change your air filter every 1–3 months
• Keep air vents and registers clean and unobstructed

Furnace Installation Options from True Blue

You can count on True Blue’s licensed technicians to install a system that fits your home and comfort needs. We offer:

 Gas Furnace Installation

Gas furnaces remain a popular and efficient choice in Missouri homes. Today’s models are quieter, more energy-efficient, and better for indoor air quality.

 Heat Pump Installation

Heat pumps provide both heating and cooling by transferring heat in and out of your home. They're quiet, energy-efficient, and ideal for homes looking to cut down on utility bills year-round.

What to Consider Before Installing a New Furnace

When replacing your furnace, it’s important to make sure the system fits your home and your long-term goals:

• Proper Sizing – A system that’s too big or too small can lead to comfort problems and higher energy costs. Our team performs a full load calculation to ensure the perfect fit.
• AFUE Rating (Efficiency) – The Annual Fuel Utilization Efficiency (AFUE) rating tells you how efficiently a furnace converts fuel into heat. The higher the number, the more efficient the unit.
• Single vs. Two-Stage Furnaces – Two-stage models offer more consistent comfort and energy savings by adjusting heating output as needed.
• Zoning Capabilities – Installing zoning systems allows for more control over different areas of your home—ideal for multi-level or larger homes.



Need furnace repair or ready to explore your replacement options?
Call or text True Blue Home Services at (314) 873-1804 to schedule your service. We’re here to keep your home warm, safe, and comfortable all winter long.