Mainstay Revenue | Recurring Revenue for HVAC Owners
Done-for-you membership for HVAC shops · one shop per market

You have thousands of past customers. Almost none of them pay you every month.

Mainstay turns them into members who do. We build the membership program, sign up the customers you've already served, and keep them billing and renewing on their own. We run all of it. No hardware, no app, nothing for your crew to touch.

Setup waived for founding shopsFirst 90 days freeOur fee comes from the homeowner, not your pocket

Built and run for you by Jonathan, an HVAC executive who has sat on the buy side of more than $200 million in acquisitions. Not a software company. Not a marketing agency, either.

A typical established shop
2,847 homes served. None of them pay you next month unless something breaks.
Every dot is a home you already paid to win. Not one of them is contracted revenue.
Already have a plan? Then it's a handful, not zero. The question is why it's still a handful after all these years.
What this actually is

Here's what your customers see, with your shop's name on it.

Not a tool you have to learn. A real membership your customers want to be on, under your brand, that bills itself. You set the plans and the prices. Below is one shop's version so you can see the shape of it.

Example

This is a sample program for a made-up shop. Every Mainstay shop builds its own: your name, your plans, your prices, your perks. All flexible and customized to your customers.

Sunline Heating & Air
Serving the valley since 1998
★★★★★Trusted by local homeowners·Licensed, insured, family owned
Become a member. Skip the surprise breakdowns.

Priority service, waived fees, and credit back toward future work. Pick the plan that fits your home.

Essential
Covered for the basics
$14.99 /mo
  • 1 system tune-up a year
  • Front-of-line priority scheduling
  • No service-call fee, ever
  • 10% off repairs and parts
  • $60 a year in Sunline Credit toward future work
  • Welcome bonus credit when you join
Join the plan
Most popular
Comfort Club
More protection, same visit
$29 /mo
Everything in Essential, plus
  • 1 system tune-up a year
  • 15% off repairs and parts
  • 2-year repair warranty
  • One premium filter swapped at your visit
  • $120 a year in Sunline Credit, bigger welcome bonus
Join the plan
Total Comfort
Total peace of mind
$49 /mo
Everything in Comfort Club, plus
  • 2 visits a year (AC and heat)
  • 20% off repairs and parts
  • No emergency or after-hours surcharge
  • Same-day service, guaranteed
  • Every filter included
  • Transfers if you sell your home
  • $240 a year in Sunline Credit, largest bonus
Join the plan

Month to month for the homeowner. Cancel anytime. Plans and pricing shown are an example; your shop sets its own.

Members pay however they want.

Card or Google Pay. Sign-up is one tap, then it renews on its own. Billing runs automatically, so there's nothing for you to invoice or chase.

StripeGoogle Pay
Who does what

Here is everything you have to do.

The reason most shops sign so few members isn't the plan. It's that the offer depends on busy techs remembering to make it, and they don't. So we don't rely on that.

Your side
Two things, once.
  • Send us your customer list and tell us what you want the plans to include.
  • Do the tune-ups when they get scheduled onto your calendar.
That's the whole ask. Nothing for your techs to sell, nothing for your office to learn.
Our side
Everything else.
  • Build the plans, pricing, and member perks under your brand
  • Load and clean your customer list
  • Write and run the campaign that invites them to join
  • Host the one-tap sign-up page in your name
  • Take the payment and set up the recurring billing
  • Chase the failed cards so you don't lose the member
  • Send the welcome, the reminders, and the renewal notices
  • Book the tune-ups onto your calendar in your season window
  • Report what came in, every month
No hardware. No sensors in homes. No new app for anyone at the shop.

And this is the entire experience for the homeowner.

One message, one tap, card on file, done. No phone call to your office, no paperwork for your CSR, no contract to mail. They pick a plan on their phone in about thirty seconds and start paying you the same day.

If your office or a tech wants to mention it on a job, that's a twenty-second handoff that helps. But the program runs whether or not anyone at the shop ever says a word.

The leak

You're good at the work. The money leaks after the job is done.

You pay $300 or more to win a customer, do the job well, and then earn almost nothing from them again. Every month starts back at zero, and the slow season hits with nothing underneath it. Members put a floor under the year that grows on its own.

The same shop, twelve months
the floor keeps rising
Month 1Month 6Month 12
Job revenue, up one month and gone the nextMembership revenue, lands every month and compounds
The math on a typical shop
$12,500/mo

A few hundred of your past customers on a $25/mo plan, about $150,000 a year once the book is built.

Here's the math for one shop, in round numbers. Yours will be different.

How a few hundred members is realistic.

Your shop has served thousands of homes over the years. The campaign reaches them again and again, not once, and the entry plan makes the yes easy. You don't need most of them to say yes. A few hundred members across the plans average about $25 a month. That's roughly $150,000 a year, from customers you already paid to win. We'll run your real, conservative number on the call.

Run your own number.

Two inputs. How many customers your shop has served, and how many of them say yes. Plans across the tiers average about $25 a month.

Every home your shop has ever served. Most established shops underestimate this.
8% is conservative for a list that gets the offer more than once.
Your recurring revenue
$5,000/mo
Members200
Per year$60,000
Added to your sale price$120,000 to $180,000
A maintenance book can add roughly 2 to 3 times its annual recurring value to a sale price. Round numbers, yours will be different. We'll run the real one on the call, conservatively.
Your customer list at 8% signed uppays you every monthpays you only when it breaks
Each dot is one percent of your list. Drag the sign-up rate and watch the grid fill.
The bigger prize

You don't just lose the monthly revenue. You lose the replacement.

Every system you've installed has a clock on it. Whoever's been maintaining it gets the call when it finally dies, and the changeout is the biggest ticket you'll ever write. A membership makes sure that's you.

Your installed base, by age of system
REPLACEMENT WINDOW0 to 4 yrs5 to 9 yrs10 to 14 yrs15+ yrswhoever maintains these gets the changeout
Years of life leftIn the replacement window now

As an installed base ages, industry math puts failures near 80 a year for every 1,000 systems. At today's changeout prices, that's a seven-figure replacement pipeline sitting in your customer list. Fewer than one shop in three sells any kind of membership, so most of your competition leaves that pipeline up for grabs. Members spend more than two and a half times what one-time customers do, and they call you first when it counts.

Figures from operators who've built and sold home-service businesses, and from HVAC deal data. Your own numbers are the real conversation.

One shop per market

The shop across town is signing the customers you're not.

A homeowner keeps one maintenance plan with one shop, and once they're on it, they stay for years. The ones you don't sign, a competitor signs, and they don't come back. So we take one shop per market. We lock your actual service area, not a radius on a map, and once yours is claimed no other shop in your area can get this from us. Claim one of the first shops and your rate is locked for good.

Enter a valid ZIP or postal code.
One shop per area. Enter your code and we'll tell you straight whether yours is still open.

Already have a maintenance plan nobody sells?

You don't need a new plan. You need the offer to get made on every job, every time, without leaning on your crew to remember. That's the part we run. Most shops with a plan on the shelf have under 3% of their customer list on it.

What the first six months looks like

From your customer list to money every month.

An illustration of how it rolls out. On the call we run it with your real customer count, not an example.

M1M2M3M4M5M6
We build your program and load your list
Plans, pricing, sign-up page, billing. Live inside 30 days.
The campaign runs to your customers
Not one email. It keeps reaching the list, and sign-ups compound.
Members pay you every month
First members bill within days of launch and never stop.
Tune-ups land on your calendar
Scheduled inside your season window, filling the slow months.
By month six the billing, the renewals, and the scheduling all run on their own. You're collecting every month and the book keeps growing.
Founding shops · the first ten

And it costs nothing to find out if it works.

No agency retainer, no ad budget, no money down. Most of what we earn comes from the new revenue we build for you, paid by the homeowner, not out of your pocket.

$500 $0
Setup is $500. Waived entirely for founding shops, so there's no check to write to get the whole program built and running.
90 days free
Then $45 a month to run it, and that rate is locked for as long as you stay. A fraction of an agency, and you're not paying for ads or promises.
100% yours
You keep all of your plan price. Our small share rides on top of what the homeowner pays, so we only earn more when your revenue grows.
Cancel anytime. No setup fee, no commitment, no notice period.

We're taking ten founding shops, and it's a capacity number, not a marketing one. Each program gets built by hand and watched closely, and I can only do that well for ten at a time. After the tenth, setup is payable and the free period ends. Founding shops keep their locked rate either way. And if we haven't loaded your customer list and launched your program within 60 days, you owe nothing at all.

The payoff

What that recurring revenue actually does for you.

Money in your pocket starting now, and a stronger business behind you later.

Money every month, not just when it breaks

Plans renew on their own, so revenue keeps coming in through the slow season instead of dropping to zero between installs.

Members are worth far more

A member is worth far more over time than a one-time customer, and when the system finally needs replacing, the big job, they're far likelier to call you first.

And it makes the business easier to sell

Predictable monthly revenue is one of the things buyers pay up for. A book of members that renews every year, and that you own, is worth more than the same money earned one job at a time.

The same shop, valued two ways
$1.2M$1.6MSold on job revenue aloneNo book of membersSame shop, same crewCarrying a $150K book
Illustrative. A maintenance book can add roughly 2 to 3 times its annual recurring value to a sale price. Real numbers depend on your shop and your buyer.

Your customer list stays yours.

Everything runs in your own accounts, under your own brand. We never own, sell, or share your list, and you can export or delete it anytime. If you ever walk away, your members go with you.

I've spent my career on the buying side of HVAC, at the table for acquisition after acquisition. I've seen up close what makes one shop worth more than another the same size, and predictable, recurring revenue is near the top of the list every time. Most shops are leaving it on the table. That's the gap I built Mainstay to close for you.
Jonathan
Founder, Mainstay Revenue
20+ years in HVACBuy side on $200M+ in acquisitionsTalk to me directly, not a rep
One shop per market

See what you're leaving on the table.

Equipment sales are soft right now, and the owners sleeping at night are the ones with members paying every month no matter the season. Tell us your shop and your area, and we'll show you the recurring revenue you're missing and what it'd be worth, your real number, not an example. No cost, no obligation, just a straight answer on whether this is for you.

Built for established independent residential HVAC shops, the kind with thousands of past customers and a good name in town, who want steadier money now and a stronger business whenever they're ready to sell. One shop per market, so the first to claim it wins it.