Smart Energy Hawaii, a division of 21st Century Technologies
HVAC contractor in Honolulu, HI 96821
About this company
Smart Energy Hawaii, a division of 21st Century Technologies is listed as an HVAC contractor at 5823 Kalanianaole Hwy in Honolulu, Hawaii, in Honolulu County. It is one of 1 HVAC companies in ZIP 96821.
Other HVAC companies nearby
Pacific Island Air Tech Company, Inc1008 Kuamauna St, Honolulu
3.7 mi(808) 845-2345
Air Conditioning Experts, LLC3811 Noeau St, Honolulu
3.9 mi(808) 732-2236
Sears Appliance Repair1505 Kapiolani Blvd, Honolulu
7.0 mi(808) 278-6396
Purair Hawaii833 Ilaniwai St, Honolulu
8.1 mi(808) 589-2712
AC Warehouse670 Auahi St, Honolulu
8.3 mi(808) 545-3084
Housing market around ZIP 96821
Figures describe the local area, not this company.
Typical home value$1,834,000+5.5% past year · +55% in 10 years
12-month value outlook+0.5%Roughly flat
Days to sale agreement32Urban Honolulu metro · 43 a year ago
New homes permitted, 20251,446Honolulu County
Listings with a price cut19.2%Urban Honolulu metro
Sale price vs list98.6%Urban Honolulu metro
New construction sales57Urban Honolulu metro, Aug · +33% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Honolulu County permitted 1,446 new homes in 2025, including 717 apartment units. 12% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.