Financing a Plumbing or HVAC Project: How the Plans Actually Work

Two products wear the same headline:

• Equal-payment promotional financing ("true 0%"): the balance is divided into equal monthly payments across the promo term. Make the payments and you pay exactly the project price — no interest, no trap door.
• Deferred-interest financing ("no interest if paid in full by…"): interest quietly accrues from the purchase date the whole time. Pay the entire balance inside the window and the accrued interest is waived. Leave any balance — even $50 — and the full accrued interest from day one lands on your account.

Neither is a scam; both are useful tools used deliberately. The problem is signing one while believing you have the other. The tell is in the fine print's phrasing: "equal monthly payments" versus "interest will be charged from the purchase date if the balance is not paid in full."

Generic math — not a lender offer — to make the mechanics concrete. Say you finance a $6,000 project on a 6-month deferred-interest plan at a 26.99% purchase APR, and the plan's minimum payment is 2.5% of the balance:

• Minimum payments run roughly $150/month — about $900 over 6 months, leaving around $5,100 unpaid when the window closes.
• Because a balance remains, the plan charges the interest that accrued on the full balance from day one — several hundred dollars added at once, and the leftover balance now carries the 26.99% APR going forward.
• To actually pay $6,000 and nothing more, you needed to average $1,000/month — not $150.

That's the entire deferred-interest game in one example: the minimum payment is not the payoff plan. Divide the balance by the months in your window, set that as your real payment, and deferred interest becomes a genuinely free short-term loan.

We've partnered with GreenSky and Synchrony — two of the largest home-improvement lenders in the country — so financing decisions come back fast, usually while we're still at your kitchen table. Available promotional plans rotate over time, which is why we show you the current plan sheet in writing rather than promising a specific offer here.

Applying is subject to credit approval, and the honest baseline everywhere in consumer lending applies: the paper you sign is the deal, not the sentence a salesperson says. Ours included — ask us for the plan terms and read them. Details live on our financing page.

One named plan we can document precisely — Synchrony's Plan 920, offered on qualifying purchases with the Synchrony Bank credit card:

• "No interest if paid in full within 6 months." This is a deferred-interest plan — the exact product from the worked example above. Deferred interest accrues from the purchase date and is charged if the balance isn't paid in full within 6 months.
• Fixed monthly payments of 2.5% of the highest balance on the promo purchase, rounded up to the nearest dollar. As the example shows, those minimums alone will not clear a typical project balance in 6 months — plan your own payoff schedule.
• Purchase APR of 26.99% for new accounts and a $2 minimum interest charge; regular account terms apply after the promo. Subject to credit approval.

Used deliberately — say, bridging a $4,000 water heater emergency until a bonus lands in month four — Plan 920 is a legitimately free loan. Used passively on minimum payments, it's an expensive one. The plan doesn't decide which; your payoff schedule does.

Generally yes, because they come from different pockets: financing is the lender's, rebates are the utility's, and specials are ours. A common LA/OC stack looks like: a Power Pro special reduces the invoice, financing spreads the invoice into payments, and a utility rebate arrives afterward as a check or bill credit.

Two honest caveats: our specials are residential-only and can't be combined with each other (one special per job), and rebates arrive on the program's timeline — weeks to months — so don't build your payoff plan around a rebate check landing inside a deferred-interest window. Treat the rebate as a bonus principal payment when it shows up.

Ask these of any contractor's financing — including ours:

1. "Is this deferred interest or equal payments?" The one-question filter that sorts everything else.
2. "What payment actually pays this off inside the promo window?" Not the minimum — the real number. Make them calculate it.
3. "What's the APR after the promo, and on what balance?" On deferred-interest plans, "what balance" is where the surprise hides.
4. "Are there fees — promo fees, origination, prepayment?" Some plans price the promotion into a fee; you're allowed to know.
5. "Can I have the plan terms in writing before I decide?" If the answer is anything but yes, you have your answer about the company too — see our contractor-vetting guide.