When should I stop using my HVAC system?

Turn the system off if you smell burning, see smoke or sparking, hear severe grinding, notice water near electrical components, or the breaker keeps tripping. If you suspect a gas leak or smell rotten eggs, leave the home and contact the gas utility or emergency services from a safe location.

What should I check first if my AC stops cooling?

Confirm the thermostat is set to cool, replace a dirty air filter, check that the outdoor unit has power, and look for ice on the refrigerant lines. If the system still blows warm air, repeatedly trips a breaker, or will not start, it may need professional testing.

How can I tell if an HVAC quote is fair?

Ask for a written breakdown of parts, labor, diagnostic fees, travel charges, and any after-hours surcharge. The quote should identify the proposed repair and warranty terms without pressuring you to approve unexplained work.

Should I repair or replace my HVAC system?

Consider the system age, repair cost, warranty coverage, efficiency, and recent repair history. A straightforward repair on a maintained system may be sensible, while a major repair on an older system with repeated failures may make replacement worth comparing. Ask for both options in writing when the choice is close.

Should refrigerant be added without checking for a leak?

Low refrigerant often points to a leak rather than normal use. Before approving a recharge, ask whether leak testing is included, what refrigerant the system uses, how much will be added, and what repair options are available if a leak is found.

Model-based DMV planning tool

Plan Before You Approve an HVAC Repair

TruePrice HVAC provides model-based planning ranges for Washington, DC, Northern Virginia, and suburban Maryland. It is not a contractor, remote diagnostic service, live quote provider, or promise of service.

How the planning range works

Describe the issue: Enter your ZIP code, choose the system, and select the main symptom. Add age or observations if helpful.
Review your range: See the model-based DMV planning range and the factors that could move the final price.
Choose your next step: Stop there, adjust your answers, or share contact details for optional technician follow-up.

Illustrative internal planning figures

These are configured model outputs for early budgeting, not surveyed local averages or contractor quotes.

Scenario	Modeled range	What it can include
Service-call or diagnostic scenario	$89–$150	Initial diagnosis, travel, and technician time on-site
Emergency or after-hours fee scenario	+$50–$150	No AC, no heat, weekend, evening, or peak-demand calls
AC capacitor or contactor scenario	$150–$350	Outdoor unit hums, fan will not start, or AC blows warm air
Common AC repair scenario	$150–$700	Thermostat, fan, electrical, airflow, and no-cooling issues
Major AC or heat-pump scenario	$650–$1,500+	Refrigerant leaks, coils, compressors, reversing valves, or major electrical failures
Common furnace repair scenario	$200–$900	Igniters, flame sensors, blower motors, control boards, and no-heat calls
Tune-up planning scenario	$100–$200	Preventive maintenance before heavy summer or winter demand
Air-filter replacement scenario	$10–$30	Basic homeowner maintenance; inspection frequency depends on filter and conditions

Safety first

Turn equipment off for smoke, sparking, a burning smell, severe grinding, water near electrical components, or repeated breaker trips. For a suspected gas leak or carbon-monoxide alarm, leave and contact emergency services and the gas utility from outside.

Use a written scope

Ask for the tested fault, parts, labor, fees, access assumptions, permit responsibility, warranty, exclusions, and post-repair verification. An on-site professional determines the actual repair and final price.