How do you know what size landscape lighting transformer you need?

Short answer: Transformer size depends on the total electrical load of the fixtures connected to the system along with appropriate design capacity.
Transformer size comes down to the total electrical load of everything connected to it, plus appropriate design capacity on top of that. You add up what the fixtures draw, and then you size the transformer so it can carry that load comfortably — not right at its limit.

This is one of those things that is easy to get wrong if somebody just guesses. A transformer that is barely big enough on day one has no room for anything else, and it will be the first thing to struggle when the system grows.

When we size a transformer, we look at the whole plan — what is going in now, and what might reasonably be added later — so you are not buying a second transformer a year down the road.

What we check in New Caney

When we look at a property in New Caney, we walk it after dark when we can, because that is when the lighting has to work. We look at the architecture, the mature trees, the walkways and steps, and the transformer and wiring that feed the system, then we check it against the landscape lighting service page to see what the property actually needs — what deserves light, what should stay dark, and what needs to be fixed before anything new goes in.
Related reading: Service page · All questions · Contact us

Frequently asked questions

What happens if the transformer is too small? An undersized transformer may not have enough capacity to properly support all of the fixtures connected to the system, so fixtures can run dim or unreliable.
Do I need a professional to look at it? If the system is not doing what it should — dim fixtures, dead runs, glare, or a design that never looked right — a professional look is worth it. Call or text Orion’s Rain at (281) 504-9998 and we will tell you what we find.
Do you serve New Caney? Yes. Orion’s Rain serves Kingwood and the Lake Houston area — Kingwood, Atascocita, Porter, Humble, New Caney, Summerwood, Fall Creek, Huffman, and Eagle Springs. Call or text (281) 504-9998, 24 hours a day.

Related questions

Get it looked at

If this sounds like your yard in New Caney, call or text Orion’s Rain at (281) 504-9998 — 24 hours a day. We will test the system and tell you what is actually wrong, and what it will take to fix it the right way.

Orion’s Rain Smartscapes and Exteriors — (281) 504-9998 — LI0029444

Orions Rain - Professional Irrigation and Drainage

5222 Village Springs Dr, Kingwood, TX 77339

(281) 504-9998

Proudly serving Kingwood, Atascocita, Porter, Humble, and surrounding areas

Licensed and Insured | Certified Backflow Testing | Licensed Irrigator LI0029444