Commercial
HVAC, Plumbing & Electrical
Greater Seattle Area
Need commercial service?
Day & Nite’s certified technicians keep your business running —24/7 Round the Clock!
- ✓ Honest Upfront Pricing
- ✓ Minimal Disruption to Your Operations
- ✓ Lifetime Workmanship Guarantee

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Commercial HVAC, Plumbing & Electrical
Reliable heating and cooling is essential for employee comfort, equipment protection, and customer experience. Day & Nite handles all commercial HVAC needs:
- Commercial AC installation & repair
- Commercial furnace & heat pump service
- Ductless & multi-zone systems Rooftop unit (RTU) service
- Preventive maintenance contracts
- 24/7 emergency HVAC service
From single fixture installs to complete commercial repipes, our licensed plumbers handle every plumbing project efficiently so your business stays running:
- Pipe repair & replacement
- Commercial water heater service
- Drain & sewer cleaning Toilet & fixture installation
- Backflow prevention & testing
- 24/7 emergency plumbing
Our licensed electricians handle everything from generator installation to panel upgrades and lighting projects for businesses of all sizes:
- Panel upgrades & electrical repairs
- Generator installation & service
- Commercial lighting installation
- Surge protection systems
- Smoke & CO detector installation
- 24/7 emergency electrical
What Seattle Businesses Say
Our restaurant’s HVAC failed during a Friday dinner rush. Day & Nite had a technician there within the hour. They fixed it fast, were discreet around our customers, and the pricing was very fair. They’re our go-to for all commercial service.
We’ve used Day & Nite for our office building’s plumbing and electrical for three years. Their maintenance contract saves us money and headaches. Professional, on time, and they always clean up after themselves. Highly recommend.
Day & Nite installed a generator and full electrical upgrade for our retail location. The project was completed on schedule, on budget, and with zero disruption to our business hours. Excellent commercial contractor.
Deals for Greater Seattle Businesses
Save on your next commercial service or maintenance contract.
Opinion
Got a commercial quote from another company? Bring it to us — we’ll provide a professional second opinion at absolutely no charge.
Claim offer →for 12 Months
No payments, no interest for up to 12 months O.A.C. on qualifying commercial HVAC, plumbing, or electrical work.
Apply today →Maintenance Plans
Protect your business with a planned maintenance contract. Prevent costly breakdowns, extend equipment life, and keep your systems code-compliant.
Get details →Commercial Service Questions? We Have Answers.
From our certified commercial technicians.



