Veteran Founded, Family Owned · Founded 1995
Trusted HVAC, Plumbing, Chimney & Fireplace Service in Fredericksburg, Fairfax & Northern Virginia
From no heat and AC breakdowns to leaks, chimney concerns, and fireplace issues, OHA helps homeowners get the right service fast. Call for immediate help, schedule service online, or find the service you need.
Emergency service, 7 days a week
Why So Many Homeowners Feel Comfortable Calling OHA First
Clear communication, trusted service, and dependable help across HVAC, plumbing, chimney, and fireplace needs.
4.9 stars · 5,000+ Five-Star ReviewsServing Virginia since 1995Veteran Founded, Family Owned
Care for the Systems That Keep Your Home Running
Explore trusted HVAC, plumbing, chimney, and fireplace services designed to keep your home safe, comfortable, and working the way it should. Get HVAC Help
Current Offers
Current OHA Coupons
- Coupon$250 offA water heater
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
- CouponFreeIndoor air quality inspection
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
- CouponFreePlumbing inspection
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
- CouponFreeRoof inspection
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
- CouponFreeEstimate or second opinion on equipment installation
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
- Coupon$50 offAny repair
Must be mentioned when booking. One coupon per visit. Cannot be combined with other offers. Residential customers in OHA's service area.
This offers may not be combined with any other offers or discounts.
See available offers for qualifying services, repairs, replacements, and seasonal home comfort needs. Current Offers
Veteran Founded, Family Owned
The People Behind Every Service Call
Background-checked professionals with decades of combined experience across HVAC, plumbing, chimney, and fireplace services.
Industry-recognized expert and original founder of OHA. Fred holds a Master’s license and has been serving Northern Virginia for over 30 years.
Why choose OHA?
- Background-checked, professional technicians
- Clear options and upfront recommendations
- On-time, reliable, and honest service
- Respect for your home and time
Fred Ouellette · Founder & Master License Holder
Why Homeowners Keep Coming Back to OHA
★★★★★
“I had a fantastic experience with Josh Williams. He was incredibly patient, explained exactly what was wrong with my system, and checked the entire unit to make sure everything was running efficiently. It’s rare to find this level of professionalism and attention to detail.”
Jennifer Tronolone
HVAC System Repair · Google
★★★★★
“Great experience with OHA. The technicians installed my hot water heater with precision and walked me through the entire install, the new items, and the manuals. I highly recommend them.”
Quincy Howard
Water Heater Installation · Google
★★★★★
“Total lifesaver. OHA came the same day I called, fixed everything, and answered all of our questions. We now have a service agreement and will absolutely call them again.”
Allison Kelly
HVAC System Repair · Google
Start with the Help That Fits Your Situation
Repair
Get help for breakdowns, leaks, loss of heat or cooling, and other urgent home service issues.
Replace or Install
Explore replacement and installation options for comfort systems, plumbing upgrades, fireplaces, and more.
Maintain & Protect
Protect performance, safety, and efficiency with recurring service and maintenance plans.
Protect Comfort, Safety, and System Performance
Routine maintenance helps reduce surprise breakdowns, improve efficiency, and keep key home systems running more reliably throughout the year.
More Ways to Make Service Feel Manageable
Explore financing, current offers, and maintenance plans that help make repairs, replacements, and ongoing care easier to handle.
Emergency service, 7 days a week
Need help right now? Call to speak with a service specialist or schedule service online in less than a minute.
Local Help Where You Need It Most
Find service information for homeowners across Fredericksburg and Northern Virginia.
Common Questions, Clear and Straightforward Answers
OHA provides residential services in these core areas:
HVAC Plumbing Chimney Fireplaces Water heaters Home generators
If you are not sure whether your issue falls within one of these categories, contact us and we will help point you in the right direction.
OHA serves homeowners across many Virginia communities, including Fredericksburg, Chantilly, Fairfax, Stafford, Woodbridge, King George, Ruther Glen, Locust Grove, and Spotsylvania.
If you are outside those areas, call us or book online and we will confirm availability for your address.
Yes. OHA provides emergency service, 7 days a week for urgent service needs.
If you are dealing with an emergency, call us directly so our team can respond as quickly as possible.
You can schedule service by phone or through our online booking option. Once your request is received, our team will review the details, confirm the appointment, and guide you through the next step.
If your issue is urgent, calling is usually the best option.
Same-day service may be available depending on the service type, technician availability, and your location. If your issue is urgent, calling us directly is usually the fastest way to check availability.
Yes. OHA offers a maintenance plan for homeowners who want more consistent system care and long-term service support. A maintenance plan can help reduce surprises, improve performance, and make it easier to stay ahead of seasonal issues.
Pricing depends on the service, the condition of the system, the parts or materials involved, and the amount of work required. OHA aims to give homeowners clear communication and practical recommendations so they understand the work being discussed before moving forward.
For larger or more involved jobs, the best next step is usually an evaluation or estimate.
Yes. OHA offers financing options for qualifying services. Financing is currently handled through our Wells Fargo financing option.
Contact OHA
Fairfax Office — Juniper Street
Fredericksburg Office — Heatherstone Drive
Fredericksburg Office — Patriot Highway
Need service today?
Call for immediate help or schedule service online now.
