Hawaii Water Service Ka'anapali Smart Controller Rebate

Buy and install a WaterSense-labeled smart irrigation controller from the qualified product list, then mail the application with the original sales receipt.

• Controller must be EPA WaterSense-labeled and on the qualified product list
• Installed at a site served by Hawaii Water, account number must match install location
• Purchased and installed within 6 months before applying
• Original sales receipt required; contractor invoices not accepted
• Rebate paid up to purchase price, excluding tax, shipping and installation
• One rebate program per device; no applying under multiple programs
• Hawaii Water may verify purchase and installation
• Pre-qualification required only if total rebates are $5,000 or more

1. 1Buy and install a qualifying controller
2. 2Complete the Residential Rebate Application (rev 6/2025) with model, install date and price
3. 3Mail it with the original sales receipt to Hawaii Water Rebate Program, PO Box 384809, Waikoloa, HI 96738-4809
4. 4Rebate check arrives by mail

Six to eight weeks for the check; contact [email protected] or (844) 207-1313 after eight weeks

Apply within 6 months of installation; no program end date published

Not published; rebates limited to one program per device

• https://www.hawaiiwaterservice.com/conservation/residential-rebates/ (official page)
• https://www.hawaiiwaterservice.com/docs/conservation/application/application_res_hi.pdf
• https://www.calwatergroup.com/news/press-releases/detail/773/hawaii-water-service-offers-free-conservation-kit-to-maui-customers-rebates-also-available-to-kaanapali-customers

Last checked October 17, 2026. See something out of date? Tell us.

Sow is not affiliated with any of these agencies or utilities. Amounts and rules change, often at the start of a fiscal year, so confirm the details on the official page before you start a project. How we research these programs