
Expert Furnace Repair in Bethesda, MD | AMS Air Conditioning & Heating
Call (240) 899-5777 for Same-Day Furnace Repair Service in Bethesda, Maryland
When your furnace breaks down in Bethesda, MD, you need fast, reliable repair service from experienced professionals. AMS Air Conditioning & Heating has been providing expert furnace repair and heating services to Bethesda homeowners since 1995. Our licensed technicians (License #18914) are available 24/7 for emergency furnace repairs, ensuring your home stays warm and comfortable throughout Maryland’s coldest months.
Same-day service available • 30 years of experience • Licensed & insured • Upfront pricing
Why Bethesda Homeowners Choose AMS for Furnace Repair
30 Years of Local Experience
Since 1995, AMS has been the trusted choice for furnace repair in Bethesda, Rockville, Potomac, and surrounding Montgomery County areas. Our technicians have serviced thousands of furnaces in homes throughout Bradley Hills, Woodmont Triangle, North Bethesda, and along Old Georgetown Road.
Fast Response Times
We understand furnace emergencies can’t wait. Most furnace repairs in Bethesda are completed the same day you call. Our technicians arrive promptly with fully-stocked service vehicles, ready to diagnose and repair your heating system on the first visit.
Licensed & Certified Technicians
All AMS technicians are Maryland-licensed (License #18914), EPA-certified, and continuously trained on the latest furnace technologies. We service all major furnace brands including Carrier, Trane, Lennox, Rheem, Goodman, York, American Standard, and Bryant.
Transparent Pricing
We provide upfront pricing before any work begins. No hidden fees, no surprises. You’ll know exactly what your furnace repair costs before we start the job.
24/7 Emergency Service
Furnace problems don’t wait for business hours. Call (240) 899-5777 any time, day or night, for emergency furnace repair service in Bethesda, MD.

Comprehensive Furnace Repair Services in Bethesda
Gas Furnace Repair
Gas furnaces are the most common heating system in Bethesda homes. Our technicians expertly diagnose and repair all gas furnace issues, including:
- Ignition System Problems – Faulty pilot lights, electronic ignition failures, or gas valve malfunctions that prevent your furnace from starting
- Heat Exchanger Issues – Cracks or damage to the heat exchanger that cause cold air or safety concerns
- Burner Problems – Dirty or damaged burners that reduce heating efficiency
- Gas Pressure Issues – Improper gas flow affecting furnace performance
- Flame Sensor Failures – Sensors that incorrectly shut down the furnace
Electric Furnace Repair
Electric furnaces are popular in newer Bethesda condos and townhomes. Common electric furnace repairs include:
- Heating Element Replacement – Failed heating coils that prevent warm air production
- Sequencer Problems – Faulty sequencers that prevent heating elements from activating properly
- Blower Motor Issues – Motor failures that stop air circulation
- Circuit Breaker Trips – Electrical problems causing repeated system shutdowns
- Thermostat Wiring – Connection issues between your thermostat and furnace
Furnace Component Repair & Replacement
AMS repairs and replaces all furnace components:
- Blower Motors – We repair or replace failing blower motors that cause weak airflow or no heat distribution
- Thermostats – Calibration, repair, or upgrade to programmable and smart thermostats
- Air Filters & Filter Systems – Replacement of clogged filters that reduce efficiency and airflow
- Limit Switches – Safety switch repairs that prevent overheating
- Capacitors & Relays – Electrical component replacement to restore proper furnace operation
- Draft Inducer Motors – Repair of motors that exhaust combustion gases
- Control Boards – Circuit board diagnosis and replacement
- Ductwork Issues – Repair of leaking or disconnected ducts affecting heat distribution
Emergency Furnace Repair in Bethesda, MD
Furnace failures happen at the worst times – during snowstorms, on weekends, or late at night. AMS provides 24/7 emergency furnace repair service throughout Bethesda and Montgomery County.
Call (240) 899-5777 immediately if you experience:
- No heat during freezing temperatures
- Gas odor or carbon monoxide detector alarm
- Unusual burning smells
- Furnace making loud, concerning noises
- Continuous cycling or failure to shut off
- Water leaking from furnace area
Our emergency technicians arrive quickly with diagnostic equipment and common repair parts to restore heat as fast as possible.
Furnace Maintenance & Tune-Up Services
Prevent costly repairs and extend your furnace’s lifespan with annual maintenance. AMS offers comprehensive furnace tune-ups that include:
- Complete system inspection
- Burner cleaning and adjustment
- Heat exchanger inspection for cracks or damage
- Blower motor and belt inspection
- Air filter replacement
- Thermostat calibration
- Electrical connection testing
- Carbon monoxide testing
- Efficiency optimization
- Safety control testing
Recommended Schedule: Annual maintenance before winter (September-November) ensures your furnace is ready for Maryland’s heating season.
Furnace Installation & Replacement
If your furnace is beyond repair, AMS provides expert furnace installation services. We help you select the right furnace size and efficiency rating for your Bethesda home and budget.
Signs You Need Furnace Replacement:
- Furnace is 15-20+ years old
- Frequent repairs costing 50% or more of replacement value
- Rising energy bills despite repairs
- Uneven heating that can’t be resolved
- Furnace undersized for your home
We install high-efficiency furnaces up to 98.5% AFUE, including ENERGY STAR certified models that significantly reduce heating costs.
Common Furnace Problems in Bethesda Homes
Bethesda’s variable winter temperatures and older housing stock create specific furnace challenges. Here are the most common issues we repair:
Furnace Won’t Turn On
Possible Causes: Thermostat problems, tripped circuit breaker, faulty ignition system, dead pilot light, or failed control board.
Our Solution: We systematically diagnose electrical connections, test the thermostat, inspect the ignition system, and identify the root cause. Most issues are resolved the same day.
Furnace Blowing Cold Air
Possible Causes: Malfunctioning heat exchanger, pilot light or ignition issues, low gas supply, or dirty flame sensor.
Our Solution: We inspect the heat exchanger for cracks, clean or replace the flame sensor, check gas pressure, and test ignition components to restore warm air delivery.
Uneven Heating Throughout Your Home
Possible Causes: Blocked vents, dirty air filters, ductwork leaks, improper thermostat placement, or zoning system problems.
Our Solution: Common in Bethesda’s multi-level homes, we inspect ductwork, check dampers, clean or replace filters, and ensure balanced airflow to all rooms.
Furnace Cycling On and Off Frequently
Possible Causes: Dirty or clogged air filter, thermostat issues, improper furnace sizing, or malfunctioning limit switch.
Our Solution: We replace filters, calibrate thermostats, inspect the limit switch, and ensure your furnace operates in proper heating cycles.
High Energy Bills
Possible Causes: Aging furnace, dirty filters, leaking ductwork, or insufficient insulation forcing your furnace to work harder.
Our Solution: We perform efficiency testing, recommend cost-effective repairs, and identify energy-wasting issues to reduce your heating costs.
Pilot Light Won’t Stay Lit (Gas Furnaces)
Possible Causes: Faulty thermocouple, dirty pilot orifice, draft problems, or gas supply issues.
Our Solution: We clean the pilot assembly, replace defective thermocouples, adjust gas pressure, and ensure reliable pilot light operation.
Furnace Making Strange Noises
Possible Causes:
- Banging/Popping – Delayed ignition or expanding ductwork
- Squealing/Screeching – Worn blower motor bearings or belt issues
- Rattling – Loose panels, screws, or ductwork
- Humming – Electrical problems or failing capacitor
Our Solution: We identify the noise source, tighten loose components, lubricate moving parts, replace worn belts or bearings, and ensure quiet operation.
Serving All Bethesda Neighborhoods
📍Downtown Bethesda & Woodmont Triangle
📍North Bethesda & White Flint
📍Bradley Hills & Bradley Farms
📍Bethesda Chevy Chase
📍Sumner & Westmoreland
📍Drummond & Edgemoor
📍Somerset & Palisades
📍Cabin John & Glen Echo
📍Battery Park & Greenwich Forest
We also serve: Rockville, Potomac, Silver Spring, Chevy Chase, Kensington, Gaithersburg, and throughout Montgomery County.
Frequently Asked Questions
What should I do if my furnace stops working?
First, check your thermostat settings and ensure it’s set to “Heat” with the temperature above current room temperature. Check your circuit breaker to ensure the furnace hasn’t tripped. Replace your air filter if it’s dirty or clogged. If these steps don’t resolve the issue, call AMS at (240) 899-5777 for professional diagnosis and repair.
How long do furnace repairs take?
Most furnace repairs in Bethesda are completed within 2-4 hours on the same day you call. Simple repairs like thermostat issues or filter replacements take under an hour. More complex repairs requiring part replacement may take 3-4 hours. If we need to order specialty parts, we’ll provide temporary solutions to keep you warm.
Do you repair all furnace brands?
Yes. AMS technicians are trained and certified to repair all major furnace brands including Carrier, Trane, Lennox, Rheem, Goodman, York, American Standard, Bryant, Amana, Coleman, Heil, Payne, and more. We service both gas and electric furnaces of all makes and models.
How often should I have my furnace serviced?
We recommend annual furnace maintenance before each heating season (September-November). Regular maintenance prevents 85% of furnace breakdowns, improves efficiency by up to 30%, extends equipment lifespan, and ensures safe operation.
Is it better to repair or replace my old furnace?
Generally, if your furnace is under 15 years old and repair costs are less than 50% of replacement value, repair is the best option. For furnaces 15-20+ years old with expensive repairs, replacement is often more economical long-term. AMS provides honest assessments and helps you make the most cost-effective decision.
Do you offer emergency furnace repair?
Yes. AMS offers 24/7 emergency furnace repair service in Bethesda and throughout Montgomery County. Call (240) 899-5777 any time for immediate assistance. We prioritize emergency calls and dispatch technicians quickly to restore heat to your home.
What areas do you serve for furnace repair?
AMS serves Bethesda, Rockville, Potomac, Silver Spring, Chevy Chase, Kensington, Gaithersburg, Germantown, and all of Montgomery County, Maryland, plus Washington, DC.
Are your technicians licensed and insured?
Yes. All AMS technicians are Maryland-licensed (License #18914), EPA-certified, bonded, and fully insured. We carry comprehensive liability and workers’ compensation insurance for your protection.
Schedule Your Furnace Repair Today
Don’t let furnace problems leave your Bethesda home cold and uncomfortable. AMS Air Conditioning & Heating provides fast, reliable, and affordable furnace repair services backed by 30 years of experience.
Call (240) 899-5777 now for:
- Same-day furnace repair service
- 24/7 emergency heating repairs
- Licensed & insured technicians
- Upfront, transparent pricing
- All makes and models serviced
AMS Air Conditioning & Heating
4811 Rim Rock Road
Rockville, MD 20853
Phone: (240) 899-5777
License: #18914
Serving Bethesda, MD and surrounding areas since 1995


Great, quick, effective service as well as a good person to work with when deciding on the new system for my house. I share AMS with everyone I know. They're cool people! 😉


Moshe is so easy to work with, came in at a MUCH lower price, and work was done quickly, and his team did a great job cleaning up after they were done.


Great service. Came quickly and got my AC working in no time. Pricing very reasonable as well.


AMS has saved us on multiple occasions. He is responsive, knows exactly what he is doing and each time has fixed our AC quickly and affordably. Call AMS. Simply the best.


Moshe has installed new systems and serviced systems for me. He is very professional and to the point. I would not use anyone else for HVAC work.


My system stopped working on one of those cold days. I called AMS and they came right away. Fixed the problem and the charge was very reasonable.


Quick response, quality work, reasonable prices. Just replaced our entire dated HVAC and did it on time and on budget.


AMS did a great job with my AC install last summer. Good communication, fair price, no nonsense, accommodating of my schedule, and quality work. Highly recommended.


Moshe has been my HVAC go-to person for 20 years for this old house. He is very skilled, knowledgeable, and reliable. Would never call anyone else.
Find us at Best of Rockville MD