The short answer: if your reps can sell solar — a long-payback, financed, consultative home-improvement sale to a skeptical homeowner — they can sell water treatment in their sleep. The water sale is shorter, more visual, closes faster, and lands on the same kitchen table with the same financing conversation. For solar companies fighting long cycles, cancellations and thin rep income between installs, water is the second product that keeps the team producing. The gap is the plumbing tie-in and the water knowledge; both are solvable.
This is one of our trade guides under how to start a water treatment business, written for solar companies specifically.
Why solar and water fit together
Same buyer. The homeowner who goes solar cares about their home's efficiency, their family's health, and long-term value — and is willing to finance an improvement that pays off over time. That is precisely the water treatment buyer. Softened water extends the life of the water heater and appliances (efficiency); reverse osmosis gives the family clean drinking water (health); both protect the home (value).
Same sale, shorter. Your reps already do the consultative in-home presentation with financing. A water appointment uses the same muscles but is more concrete — the homeowner watches a test on their own tap water — and closes in one visit far more often than solar does.
Same door. Solar companies knock doors and set appointments. Water is a second reason to knock, a second appointment to set, and a product to offer at the doors that aren't solar candidates (shade, roof, renters' landlords).
Rep economics. Solar reps wait weeks or months for installs and commissions, and watch deals cancel. Water installs in days. A rep who can close a water system in the same week keeps eating between solar deals — and stays.
The three plays for a solar company
1. The same-visit add-on. During or right after the solar presentation, the rep offers a free water test. "While I'm here — most of our customers on this water ask about it. Want to see what's in yours? Takes ten minutes." The financing conversation is already open; the water system can sit on it.
2. The install-day second appointment. Solar install day is a homeowner at peak excitement about improving their home. A water test scheduled for that week rides that energy.
3. The non-solar door. A meaningful share of the doors a solar rep knocks can't or won't do solar. Instead of walking away, offer the water test. It converts a dead door into a live appointment and gives the rep something to close this week.
Plus the obvious one: your existing customer base — every past solar customer gets a "we now do water" message and a free-test offer.
What's different: the tie-in and the knowledge
Solar companies have electricians, not plumbers. Connecting a softener or whole-house system is plumbing, and in most states that needs a plumbing license. The usual answer is a partner plumber who makes the tie-in per install while your team sells and services — see the licensing notes in the getting-started guide. As volume grows, many companies bring a plumber in-house.
The knowledge gap is bigger than the licensing one. Solar reps can talk kilowatt-hours all day; they can't explain hardness, iron, sulfur, chlorine or what an RO does — and the homeowner will ask, at the sink, right before the close. It's learnable in weeks, and it's where the Water CheatCode curriculum starts.
Positioning water for the solar customer
Don't sell water as a plumbing product. Sell it the way you sell solar — as a home system with a payback:
- Efficiency: scale in the water heater makes it work harder and die sooner; soft water protects the heater, the dishwasher, the washer. Fewer replacements, lower energy use.
- Health: reverse osmosis at the kitchen sink for drinking and cooking water — the same family that wanted clean energy wants clean water.
- Protection: the home is an investment; the water treatment protects the fixtures, the appliances and the plumbing.
Your reps already know how to tell that kind of story. Give them the water version.
Product line for a solar company
Softeners and whole-house carbon filtration for municipal water; iron, sulfur and UV systems for well water; reverse osmosis everywhere as the drinking-water add-on solar customers respond to. Choose a supplier with a full line, sizing support and financing that layers alongside your solar lender.
Where solar companies get water wrong
- Treating it as a rep side hustle with no product, training or process behind it.
- Letting reps "quote" water instead of running the in-home test — the test is the presentation.
- No plumber arranged before the first sale.
- Skipping the water science; the sale dies at the first question.
- No service rhythm — water customers need salt, filters and checks, and that's the recurring revenue solar never had. See reviews, service and repeat business.
How Water CheatCode helps — free
Water CheatCode teaches solar companies the parts they don't have: the water science, the product line, the in-home water test-and-close adapted for reps who already run consultative sales, the same-visit and non-solar-door plays, financing integration, and the service rhythm. Free to join. You already have the best in-home closers in home services; water is the product that lets them close this week.
FAQ
Can a solar company sell water treatment?
Yes, and the fit is strong: solar reps already run a consultative, financed in-home sale to homeowners who care about efficiency, health and home value — the same buyer for water treatment. The plumbing tie-in is handled by a partner plumber per install or an in-house plumber as volume grows.
Why do solar reps sell water filtration?
Because water closes faster than solar, installs in days instead of months, and gives reps income between solar deals and cancellations. It also gives them a product to offer at the many doors that can't do solar, turning dead knocks into live appointments.
How should a solar company position water treatment to customers?
The same way it positions solar — as a home system with a payback: soft water protects the water heater and appliances (efficiency), reverse osmosis delivers clean drinking water (health), and treatment protects fixtures and plumbing (home value). Solar customers already think in those terms.
Do solar companies need a plumber to install water softeners?
In most states, yes — connecting a system to the home's water supply requires a plumbing license, which solar companies rarely hold. The common approach is a partner plumber who makes the connection per install while the solar company sells and services the system; check your state's rules before the first job.