1,400+ Reviews | 4.9 Rating Click Here to Enter Our Oldest Furnace Contest! 240-224-3144 Schedule Online Heating Cooling Electric Indoor Air Quality Service Plans About Contact TRUSTED PROFESSIONALS Cooling Heating Electric Air Quality SEE ALL SERVICES NEED SERVICE? See if we serve your community! Service Needed HVAC Estimate HVAC Repair HVAC Tune-Up Electrical Service/Estimate Request Service Our Services The GAC team offers the highest quality HVAC, electric, and indoor air quality services throughout Montgomery, Frederick, and Howard County. Cooling Heating Electric Air Quality Read More Why GAC “What do our customers want?” It’s a question that drives the way we do business every day. ON-TIME SERVICE 100% SATISFACTION UP-FRONT PRICING FACTORY-TRAINED TECHNICIANS FULLY-STOCKED TRUCKS RESPECT FOR YOUR HOME Read More Heating, Air Conditioning & Electric in Maryland OUR TRUSTED SERVICES If you’re looking for HVAC or electrical work, GAC Services can meet your needs. Our family-owned and operated company has been serving the Gaithersburg area for over 50 years. We care about our customers and want to keep them comfortable by providing professional, honest, reliable, and valuable indoor comfort and energy solutions. WHY GAC “What do our customers want?” It’s a question that drives the way we do business every day. READ MORE Hear What People Are Saying The HVAC technician was very professional and knowledgeable. Great service with high confidence that We just had our heating+ac units (indoor and outdoor) replaced today, on one of the hottest days of GAC sales rep and the installers arrived at my home on time and were professional. They respected me Very impressed with every aspect of our experience with GAC Services, from the routine maintenance o Ermias was my technician today. He called ahead when he was on his way, and arrived within the time Read More GAC Prime Maintenance Membership One of the best ways to protect your HVAC system is with a Prime Maintenance Membership. Enroll today to receive these additional outstanding benefits: High-Performance Seasonal Tune-Ups 20% Discount on HVAC Repairs 10% Off Electrical Repairs Priority Service A Trusted Professional on Your Home Service Team Reduced Diagnostic Fee Satisfaction Guarantee Relax, We’ll Contact You! Transferable Monthly Newsletters Read More Request Service If you are in need of immediate assistance, please call our office directly. Name* Email* Phone* City* Zip Code* Service Needed * HVAC Estimate HVAC Repair HVAC Tune-Up Electrical Service/Estimate How Can We Help You?* Request Service Promotions Our team offers money-saving HVAC and electrical promotions to help your investment go further. Check out some of our current deals below for more details. $75 OFF ELECTRIC PANEL REPLACEMENT OR UPGRADE expires 11/30/2021 READ MORE SCHEDULE SERVICE $59 SEASONAL HEATING INSPECTION Original Price $129 expires 11/30/2021 READ MORE SCHEDULE SERVICE VIEW ALL Redeem Your Offer Award Winning HVAC & Electrical Contractor Our commitment to training the best team of licensed HVAC technicians and electricians possible and dedication to outstanding customer service has contributed to our growth and success SERVICE AREA We provide heating and cooling services throughout Montgomery County, Frederick County, Howard County, and Carroll County. View All Service Areas Service Areas CALL US: 240-224-3144 WSSC: 72505 HVAC: 02-7541 Electric: 4172 SERVICES Heating Cooling Electric Indoor Air Quality ABOUT About Blog Contact Careers CONTACT US GAC Services 227 E. Deer Park Drive Gaithersburg, Maryland 20877 LEAVE A REVIEW Read Our Reviews Leave A Review © 2021 GAC SERVICES | DISCLAIMER | PRIVACY POLICY