What should I do if my new furnace is not heating my home?

If your new furnace is not heating your home, first check the thermostat settings and ensure it is set to 'heat.' If the furnace still doesn’t produce heat, inspect the power supply and look for blockages in the ductwork. If these steps do not resolve the issue, it’s time to call Dr. Comfort AC & Heat LLC for professional assistance.

Troubleshooting Guide

Furnace Installation and Servicing Specialists — Dr. Comfort AC & Heat, Humble, Texas

In Humble, Texas, where the Gulf Coast’s humidity levels are notably high and winter can bring sudden chilly spells, selecting a heating system engineered to accommodate these local weather variations is crucial for reliable warmth and efficient energy use. Considering the unique architectural features of homes in communities such as Atascocita Shores and Fall Creek during the installation process plays a vital role in enhancing furnace durability and reducing unexpected service interruptions. Homeowners in these areas frequently report problems soon after their heating systems are installed, including inconsistent temperature distribution and unplanned repair costs. This guide is designed to assist Humble residents in identifying common challenges related to furnace setup and offers practical insights tailored to the local environment.

By Dr. Comfort AC & Heat

8 min read

Expert-reviewed

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Symptoms & Causes

Identify the Problem

Match your symptoms to the most likely cause. Severity ratings help you decide how urgently to act.

Furnace not turning onhigh

Likely cause: Thermostat malfunction, Power supply issues, Tripped circuit breaker

DIY check: Check the thermostat settings and replace batteries if necessary.

Inconsistent heating throughout the homemedium

Likely cause: Ductwork leaks, Improper installation, Incorrect furnace size

DIY check: Inspect vents for blockages and ensure they are fully open.

Strange noises from the furnacemedium

Likely cause: Loose components, Debris in the system, Improper installation

DIY check: Look for any loose screws or parts and tighten them.

Furnace blowing cold airhigh

Likely cause: Incorrect thermostat settings, Pilot light issues, Blocked air filters

DIY check: Check and replace air filters as needed, and verify thermostat settings.

Frequent cycling on and offmedium

Likely cause: Oversized furnace, Thermostat issues, Ductwork problems

DIY check: Ensure the thermostat is set correctly and not placed near heat sources.

Furnace emits strange odorshigh

Likely cause: Dust burning off, Gas leaks, Electrical issues

DIY check: If you smell gas, turn off the furnace and call a professional immediately.

What to Do Next

Step-by-Step Action Plan

Follow these steps before calling a technician — you may be able to resolve the issue yourself.

Check the Thermostat

Ensure the thermostat is set to 'heat' and the desired temperature is above the current room temperature.

Inspect the Power Supply

Verify that the furnace is plugged in and that the circuit breaker hasn’t tripped.

Examine the Air Filters

Check if the air filters are clean and replace them if they are dirty to improve airflow.

Assess Ductwork

Inspect the ductwork for any visible leaks or blockages that may be affecting airflow.

Listen for Unusual Noises

Pay attention to any strange sounds and check for loose components or debris.

Monitor for Odors

Be alert to any unusual smells, especially gas, and act accordingly by contacting a professional.

Pro Tip

Always turn off power to the unit at the breaker before inspecting any components. Safety first — even for simple checks.

When to Call a Professional