Sal built a $2 million plumbing company in a small town in Pennsylvania over 15 years. He has the trade figured out. He knows the niches, the water treatment, the tankless water heaters, all of it. And on a call I had with him this week he told me something that every plumber in the country needs to hear: the easiest money he has ever made did not come from a drain or a water heater. It came from a sweating homeowner with a dead AC who said "I will pay you whatever to fix this." That is the whole case for plumbers into HVAC in one sentence, and it is why the smartest plumbing shops I work with are quietly building a second business inside the one they already own.
I am Luke Crowson, and I have spent the past year watching plumbing contractors like Sal at Plumbing Pros figure out that the truck already in the driveway can sell twice the revenue with the right second trade bolted on. This article is the version of that call I wish I could hand to every plumber I talk to. It runs on the Metrics, Analysis, Action framework from Dennis Yu, because a good idea without numbers behind it is just a feeling. Here is why plumbers into HVAC is the best growth move available to a trade business right now, and exactly what to do about it.
The metrics: why HVAC revenue clears the bar plumbing cannot
Start with the number that matters most to a contractor, which is not impressions and not rankings. It is the phone ringing with a job that closes at a real ticket. Sal told me his shop already sold 15 to 20 HVAC service plans and that the plans are 10 times easier to sell than plumbing plans. Here is why the math works. A plumbing service plan is a hard sell because people go years without a plumbing problem. An HVAC plan sells itself because a homeowner in July with a broken condenser is not shopping on price. Sal is charging $45 to $60 a month on recurring HVAC plans, two visits a year, spring and fall. One customer on a $59.99 plan is roughly $700 a year in recurring revenue for the life of the account.
Now stack the job tickets. A drain cleaning is a $200 call. An HVAC system replacement Sal quotes is $17,000 to $18,000, and homeowners sign without pushing back. His coach built a price book in Florida, Sal doubled and tripled some of those line items, and he has not had a single pushback. When you can turn a service call into a $3,000 to $4,000 indoor air quality upgrade with UV bulbs and duct cleaning, or an $18,000 system replacement off a failing evaporator coil, the revenue per truck roll is in a different universe than plumbing. That is the metric that should make every plumbing owner weighing plumbers into HVAC sit up.
The analysis: what the numbers actually mean for plumbers into HVAC
Metrics without analysis is a data dump, so let me give you the comparison that matters. A solid plumbing tech in a mid-size market might generate $150,000 to $250,000 in annual revenue swinging a wrench all day. Sal's point on the call was blunt: one good HVAC tech, one manager, one salesman, and one worker can do a million dollars a year. The reason is not that HVAC is harder. It is that the perceived value is already sitting in the homeowner's head before you walk in. You do not have to sell comfort to someone who is sweating. You have to diagnose it and fix it. The physical skill floor is actually lower than plumbing. The mental skill is higher because you are troubleshooting wiring diagrams and refrigerant levels, so you need a smart tech, not a strong one.
Here is the analysis piece most plumbers miss. Sal said that after running his own 100-point inspection on unit after unit, he has not found a single system installed properly. Not one. Static pressure wrong, refrigerant levels off, the last guy not smart enough to know what to check. That is not a knock on homeowners. It is a market signal. It means every existing HVAC install in your service area is a documented opportunity to educate a customer and win a replacement. A plumber who already has the trust, the reviews, and the trucks is sitting on that opportunity and cross-selling into a repair backlog the previous installers created. This is the same logic behind the MAA framework: the number only means something when you benchmark it against what it should be.
Recurring revenue is the quiet multiplier here. Sal's coach hammers on one fact: businesses with recurring revenue sell for roughly six times what businesses without it sell for. His stated goal is a couple thousand accounts on recurring plans so his monthly overhead is covered before a single new call comes in. That is not a marketing tactic. That is recession insurance. If HVAC plans are 10 times easier to sell than plumbing plans, and recurring revenue is the thing that makes the whole business worth more, then plumbers into HVAC is not a side hustle. It is a valuation strategy.
The action: the exact steps to add HVAC to a plumbing business
Analysis is worthless without a next step, so here is the procedure. You follow procedures on job sites all day. Follow this one for the transition.
Get one person certified first. You do not need a fleet. Sal is taking his EPA refrigerant certification this week with his coach proctoring over the phone. Start with the owner or your smartest tech. The EPA 608 certification is the legal gate for handling refrigerant, and it is the single credential that lets you legally start booking HVAC service.
Build the service plan tiers before you buy a second van. Sal offers a plumbing plan, an HVAC plan, and a combined plan. When a tech is on a plumbing call and the homeowner shrugs at a plumbing plan, the HVAC plan is the one that closes because people will pay to keep their AC running. Structure the same three tiers, then have a CSR sell the entry plan over the phone on inbound calls before anyone even rolls a truck.
Incentivize the crew so they want the new trade. Sal built a separate bonus structure for HVAC. Sell a certain size unit, the tech gets $250. Bigger unit, $350. Do the install, another couple hundred. Now the guy selling and the guy installing are both gung-ho because there is a day's pay on top of their base. You cannot bolt on a trade your crew resents. Pay them to love it.
Fix your Google Business Profile for the second trade. This is where the marketing has to catch up to the trucks. Open your dashboard at business.google.com, click Info, and confirm you can be found for HVAC and not just plumbing. As you open a second location, you will need a separate profile. Go to business.google.com, click Add business, add a single business, use the same name with the new address, and complete the verification. Google ranks you on how local you are to the searcher, so a second profile in a second market is not vanity. It is coverage. This is the exact map-pack logic in the local SEO playbook.
Build the HVAC section of your website so the calls have somewhere to land. A dedicated HVAC section with service pages tied to real town names does two jobs at once. It helps you rank in the map for HVAC searches, and it gives service plan buyers a page to convert on. Photos of completed installs with the homeowner's city in the caption beat stock images every time.
Sell premium, because HVAC buyers already want quality
Sal made a point I want every plumber to internalize. When someone has money and their comfort is on the line, they do not want a cheapo unit. They want the Mercedes. So why would you offer them the cheapo unit? He is pushing premium equipment, quiet, efficient, redundant heating, the kind of system that makes a nice home feel nice. The same instinct that made him successful selling high-end tankless water heaters in plumbing carries straight into HVAC. Premium equipment plus genuine care for the customer is the moat that makes plumbers into HVAC hard to beat, and it is the same reputation-first approach we build with contractors through reputation amplification and knowledge panels so a homeowner Googling you finds a five-star operator, not a mystery.
There is also a hiring reality worth naming. Sal put an ad on Indeed for a plumber, an HVAC tech, and an apprentice, and he told me you cannot find a plumber. Any good plumber is either opening his own shop or already locked up at another company. HVAC talent, especially a smart open-minded tech, is a more open lane. For plumbers into HVAC who are struggling to grow a plumbing crew, the HVAC hiring market may actually be friendlier, and training a young tech on the easy service work takes about three months. Sal is even building out training content in an app so he stops burning weeks training every new hire by hand. If you want the next generation of operators who can run that content pipeline, that is the whole idea behind the AI apprentice training program at High Rise Influence.
The expansion play: what HVAC unlocks that plumbing alone never did
Here is where the plumbers into HVAC move gets exciting. Sal is planning a second location in Myrtle Beach, South Carolina, one of the fastest growing metro beach areas in the country, and he is leaning HVAC-heavy down there because the AC season runs year round. His dad, a licensed plumbing instructor, is taking the master plumber test and will run the location and train the crew. The plan is to keep his core three guys running the Pennsylvania shop and build the new market small and lean, one good manager and one good tech, the same way he built the plumbing company from nothing.
That is the lesson under the lesson. Sal is not chasing size for its own sake. He would rather run five locations doing $2 to $3 million each with four great people than one bloated shop grinding at a 10 percent margin with a building full of office staff. Quality over quantity. Keep the crew small, keep the reputation clean, keep the phone ringing, and let HVAC do the heavy lifting on ticket size. A plumber who has already proven he can build trust in one market can copy and paste that trust into a second one, and HVAC is the trade that makes the second market worth the plane ticket.
If you are a smart plumber, this is your next move
The whole case comes down to this. HVAC has a lower physical skill floor, a higher perceived value, easier service plan sales, bigger tickets, a friendlier hiring market, and a marketplace full of improperly installed units waiting to be replaced. If you are an experienced plumber and you are smart enough to troubleshoot, you should absolutely be getting into HVAC. Sal figured it out and told me it feels like he started a whole new business inside the one he already had. Two businesses, one set of trucks, one reputation doing double duty.
The catch is that the marketing has to keep up with the trucks. New service pages, a second Google Business Profile, service plan funnels, and reviews feeding your reputation are what turn the HVAC opportunity into a ringing phone. That is exactly the work we do every day for contractors making this transition. If you are a plumber ready to add HVAC and want the digital side handled by people who actually understand the trades, request your free HVAC marketing audit and we will show you where the calls are hiding in your market.