Commercial HVAC · Electrical · Plumbing
We don't just fix problems.
We build lasting solutions.
HVAC, electrical, and plumbing for commercial tenants in Farmers Branch, Addison, and Lewisville. We answer the phone. One call, one crew, one invoice.
24 Hour Same Day Service
24 Hour Same Day Service
We run our own crews out of Addison.
We answer the phone.
A real person picks up. No voicemail maze.
One call. HVAC, electrical, plumbing.
Three trades, one invoice, one company.
No surprise billing.
Any work beyond the original quote gets approved by you, in writing, before we start. And you get a line-item invoice you can hand straight to your landlord.
What we do.
HVAC, electrical, and plumbing under one phone number, plus HVAC maintenance and parking lot patching. Built for commercial tenants.
Commercial HVAC repair, maintenance, replacement.
Rooftop units, older split systems, summer-peak failures — we keep commercial tenants cool and keep the lease running.
See detailsThe inspect-and-clean your lease asks for, twice a year, on a schedule we keep track of.
See detailsCommercial electrical repairs and tenant improvements.
Outlet and circuit additions, lighting, panel work, TI electrical. Licensed through our master-electrician partner.
See detailsCommercial plumbing service and repair.
Clogged drains, fixtures, water heaters, the small-diameter pipe work typical of retail and light industrial spaces.
See detailsPotholes and failed sections cut out and patched — concrete or asphalt.
See detailsDual-fuel and tri-fuel portable generator installation.
Keep the essentials running when the grid goes down. Choose a dual-fuel or tri-fuel portable setup that covers up to 50 amps and moves with you.
See detailsStart with the trade your space needs
Big Dog's core commercial work is commercial HVAC, planned HVAC maintenance, commercial electrical, and commercial plumbing. If you are working through a triple-net lease, read our guidance for commercial tenants.
For a closer look at why a scheduled visit belongs in the lease file, see the rooftop-unit maintenance guide.
Where we work.
Farmers Branch, Addison, Lewisville. Commercial tenants are our core, and residential service is also available.
Primary service corridor. Aging DFW industrial and retail stock keeps HVAC, electrical, and plumbing work steady.
Office parks and mixed-use buildings with long-tenured commercial tenants.
Industrial warehouse and strip-mall tenants along the I-35E and SH 121 corridors.
Questions tenants ask us
Who pays for HVAC repair in a triple net lease?
Usually the tenant. Under a Texas NNN lease, HVAC repair and replacement typically falls on the tenant, not the landlord. The roof is the landlord's, everything under it is yours. Your lease is the final word, so read it, and we'll give you a line-item invoice so you can check.How fast can you get someone out?
24 Hour Same Day Service. During posted hours a real person picks up and gets the crew dispatched. No voicemail, no phone tree.What's the difference between a commercial and residential HVAC contractor?
Commercial HVAC runs on bigger equipment (rooftop units, larger split systems) and has to meet commercial building codes and inspection rules that residential doesn't. Commercial techs also work around business hours, tenant operations, and lease obligations. Commercial tenants are our core, and we also serve residential customers.Do you work on commercial plumbing and electrical too, or only HVAC?
All three. HVAC, electrical, and plumbing. One call covers whichever trade the job needs. Electrical work runs through our master-electrician partner, licensed in Texas.What areas do you serve?
Farmers Branch, Addison, and Lewisville are our primary service areas. We cover commercial tenants across DFW, and residential service is also available.
Something broken now?
Call us or fill out the form. We answer the phone.