Certified HVAC Services in Wilmington, DE 19804 - William G Day

330 Water St Ste 109, Wilmington, DE 19804

(302) 427-3700

https://williamgdayco.com

Key Services

  • Plumbing installation or replacement
  • HVAC installation or replacement
  • Hot water recirculation pump installation
  • HVAC system maintenance
  • Hot water recirculation pump repair
  • Drain repair
  • Plumbing repair

Our Story

For over 45 years, William G Day has been a trusted name for home comfort in Wilmington, DE. As a licensed, family-owned HVAC and plumbing company, we understand that a well-functioning heating, cooling, and plumbing system is essential for your daily life. When something goes wrong, you need service you can rely on. That's why our NATE-certified technicians are equipped with advanced diagnostic tools to quickly identify issues and provide effective, lasting solutions. We proudly serve residential and commercial clients throughout New Castle County with a full range of services, from emergency repairs to new system installations, always focusing on clear communication and quality workmanship to keep your home comfortable year-round.

Q&A

My Wilmington home's AC isn't cooling well during a summer heatwave. What should I do?

This is a common issue in our hot, humid summers. First, check your air filter and thermostat settings. If the problem persists, it could be a refrigerant leak, a failing compressor, or an issue with your ductwork. Our NATE-certified technicians use advanced diagnostics to pinpoint the exact cause quickly. We can perform repairs to get you cool again or discuss efficient replacement options if your system is aging and struggling to keep up.

What are the signs that my Wilmington home needs a plumbing inspection?

Watch for signs like unusually high water bills, slow drains throughout the house, low water pressure, or the sound of running water when no fixtures are in use. For older homes in New Castle County, hidden leaks or deteriorating pipes are common concerns. Our comprehensive plumbing inspections use camera technology to visually inspect sewer lines and diagnose issues behind walls, helping us catch small problems before they become major, costly repairs.

Why should I consider a hot water recirculation pump for my home?

A recirculation pump provides instant hot water to your faucets and showers, eliminating the wait and water waste of running the tap. This is especially valuable in larger homes or multi-story buildings common in our area. We can assess your plumbing layout to recommend the right system, whether it's a dedicated return line or a demand-controlled pump under your sink. Proper installation ensures you save water and enjoy immediate comfort.

Business Location & Hours



Mon:7:00 AM - 4:00 PM
Tue:7:00 AM - 4:00 PM
Wed:7:00 AM - 4:00 PM
Thu:7:00 AM - 4:00 PM
Fri:7:00 AM - 4:00 PM
Sat:Closed
Sun:Closed


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