Drainpipe Plumbing & Solar has been named “The Best of the Big Island” 8 times by readers of the Hawaii Tribune. Drainpipe Plumbing & Solar is owned and operated by John Gapp who started the business in Kalapana in 1990 across from the “Drainpipe” surf spot. We’re now located in Kea’au and have been serving the Big Island for over 20 years. We provide residential and commercial plumbing and solar services island wide.

Why Solar Hot Solar? Many people don’t realize the energy required just for domestic hot water. 20-35% of the average family’s energy consumption is for heating water for laundry, dishes, showers. With State and Federal tax credits along with energy rebates the cost of a system can be as low as $1,100. We can cut your utility bills and save you $500 to $1200 a year. In fact, once you install our solar water heater for your home it will pay for itself within 2 years.


Our Address:

15-1914 33rd St. Keaau, Hawaii 96749

HICA Member Details

HICA Members Name

John G. Gapp

Member Type

Contractor Member

Contractors License Number