GreenHeat Review (Philippines): Institutional Track Record, Residential Work Too
GreenHeat Corp is one of the more substantial solar contractors in the Philippines, and its credentials are unusually checkable for this market — which is itself a useful signal in an industry where verifying an installer is most of the work.
The track record
- Over 20 years in the industry across commercial, industrial and residential.
- More than 48 MW of installed solar PV capacity.
- ISO-certified, with end-to-end delivery: engineering design, installation, and long-term operations and maintenance.
- Client list including Ateneo de Manila University, the Asian Development Bank, the United Nations Development Programme, SM Supermalls, Wilcon Depot, Honda Parts Manufacturing, Manuel L. Quezon University, St. Scholastica Marikina, Asia Brewery and Batangas Egg Producers Cooperative.
That client list is the part worth pausing on. Institutions like ADB and UNDP run procurement processes with technical evaluation, insurance requirements and documentation standards that a fly-by-night contractor cannot survive. Being selected repeatedly by that kind of buyer is a stronger signal than any marketing claim on a website.
Our how to avoid solar scams guide covers the opposite end of this market, and why the gap matters.
What this means for a homeowner
GreenHeat does residential work, but understand the shape of the company: its centre of gravity is commercial and institutional. That cuts both ways.
In your favour:
- Engineering depth that a small residential-only outfit may not have, particularly for anything unusual — odd roof structures, three-phase supply, larger loads.
- An O&M capability, which matters over a 25-year system life.
- A company substantial enough to plausibly still exist when a warranty claim lands in year ten. That is the single most under-weighted factor in choosing an installer.
Worth checking:
- Minimum project size. Contractors built around commercial work sometimes have a floor that a 3-5kW home system sits below. Ask directly.
- Price. Institutional-grade process costs money. Expect quotes above the cheapest you can find — see the price list for the ₱45,000-75,000 per kW range, and where a premium contractor sits in it.
- Who actually does your install. On any larger contractor, ask whether the crew on your roof is in-house or subcontracted.
How to use this review
Do not treat one company’s credentials as a reason to skip the process. The advice in the installer roundup holds regardless of who you are talking to: get itemised quotes from two or three vetted installers, compare them on peso per watt, and ask each one the same questions about panel brand, inverter brand, warranty terms and who backs them.
A strong track record tells you a company is unlikely to disappear or botch the engineering. It does not tell you they are the right price for your roof.
Where it falls short
- Not a budget option. Institutional process is priced accordingly.
- Residential may not be the priority. Confirm your project size is one they actively want.
- We have not verified residential-specific pricing or lead times — the documented track record is largely commercial and institutional.
Who it’s best for
Homeowners who want an established, accountable contractor with genuine engineering depth and are willing to pay above the cheapest quote for it — particularly for larger residential systems, complex roofs, or where long-term O&M matters.
If you want the cheapest working system on a simple roof, a smaller local installer will likely beat this on price. Compare against Solaric and the installer roundup, and read what to expect from a site survey before booking anyone.