Frequently Asked Questions

William G. Day provides full-service residential and light commercial plumbing, including leak repairs, drain cleaning, fixture installation, water heater service, pipe replacement, and emergency plumbing support.

Yes. If you have a burst pipe, overflowing toilet, or sudden water leak, we prioritize urgent calls and work to stop the damage quickly, then provide a clear plan for permanent repair.

The most common issues we see are clogged drains, leaking faucets, running toilets, low water pressure, water heater failures, and pipe leaks-especially in older homes.

Signs of a hidden leak include rising water bills, musty smells, damp spots on walls or floors, peeling paint, and the sound of running water when nothing is on. If you suspect a hidden leak, we can locate it and recommend the best repair option.

Absolutely. We showers, tubs, and main lines.We will also check for recurring causes like grease buildup, improper pipe pitch, or root intrusion and help prevent repeat backups.

Yes. We service and install both traditional tank water heaters and tankless systems. If your water heater is producing rusty water, making noise, or running out quickly, we can inspect it and advise whether repair or replacement makes more sense.

If your unit is older, leaking, not heating consistently, or requires frequent repairs, replacement may be the smarter move. We will walk you through options based on your household size and hot water demand.

Yes. Low pressure can be caused by mineral buildup, failing pressure regulators, partially closed shutoff valves, corroded pipes, or municipal supply issues. We troubleshoot the full system and address the root cause.

Yes. Whether it's upgrading a kitchen faucet, installing a new toilet, or replacing a bathroom vanity sink, we make sure everything is installed correctly, sealed properly, and tested before we leave.

First, shut off the main water valve. Then open a faucet to relieve pressure and, if safe, shut off power to affected areas. After that, call our team so we

 can stop the leak and repair the damaged pipe as quickly as possible.

We price based on the scope of work, time, and parts required. For most jobs, we provide a straightforward estimate before starting, and we will explain your options so you can choose what fits your budget.

Yes. Simple steps like regular drain maintenance, checking for small leaks early, flushing water heaters when needed, and avoiding grease or wipes in drains can prevent expensive issues later. We can also recommend upgrades for aging plumbing systems.

Our goal is to do the job right the first time using quality materials and professional workmanship. If something isn't right after service, we want to know so we can make it right.

Scheduling depends on the day and urgency, but we work to accommodate emergencies and offer prompt appointments for standard repairs and installs.

William G. Day Co handles both plumbing and HVAC, so one call covers everything from water heater installation to AC repair and furnace service. You never need to coordinate multiple contractors for combined plumbing and HVAC jobs in the Wilmington area.

William G. Day Co repairs a wide range of air conditioning issues, including systems that won't cool, units that cycle on and off too frequently, refrigerant problems, and failed components. If your AC is underperforming during a Wilmington summer, a technician can diagnose and repair it in the same visit.

Yes, William G. Day Co installs and replaces furnaces and other heating systems for homes and businesses in the Wilmington, DE area. Whether your existing system has failed or you're upgrading to a more efficient unit, they handle the full installation from removal of the old equipment to startup of the new one.

HVAC maintenance typically covers cleaning coils, checking refrigerant levels, inspecting electrical connections, testing system controls, and replacing filters so your equipment runs efficiently and reliably. Scheduling regular tune-ups with William G. Day Co helps catch small problems before they turn into costly breakdowns during peak heating or cooling season.

Yes, William G. Day Co is a full-service contractor covering both plumbing and HVAC for residential and commercial customers in Wilmington, DE. That means one company handles water heater repair and replacement, AC repair, heating installation, drain work, and more — without needing to juggle multiple service providers.