Refrigerant Price Increases Every HVAC Contractor Feels

A refrigerant price increase is the hardest cost move for an HVAC contractor to verify, because refrigerant is the one major input in this trade with no clean public price index to check it against. Line set you can benchmark: it tracks copper, and copper is published monthly. Sheet metal you can benchmark, same way. Refrigerant you cannot. The only price history that exists for the jug in your van is the one sitting in your own invoices, and most shops have never assembled it.

That is the whole problem with this category. These three materials are bought on counter runs rather than quoted on jobs, they are small enough per line that nobody flags them, and they are large enough in aggregate over a year to matter. They drift, quietly, and there is no external number to argue with.

Below: what actually sits behind a refrigerant line, what the published indexes say about line set and sheet metal, and a method for building the price history that does not exist anywhere else. If you want the equipment side of the same question, why the same condenser costs different money in April and July covers it.

Why a refrigerant price increase is so hard to check

Be clear about the limitation, because it changes what you should do. The Bureau of Labor Statistics publishes product-level indexes for most of what you buy: unitary air-conditioners, except air source heat pumps and heat pumps for the box, copper and brass mill shapes for line set and fittings, sheet metal air-conditioning ducts and stove pipe for duct. There is no equivalent published series that cleanly tracks what a jug of refrigerant costs a contractor.

So the honest answer to “is my refrigerant price fair” is not “compare it to the index.” It is:

Compare it to your own price for the same jug, three months ago and twelve months ago.
Compare it to a second supplier’s price for the same jug this week.
Compare the per-pound cost, not the per-jug cost, so a change in cylinder size cannot hide a change in price.

That is a weaker toolkit than the one you have for copper, and it is why the category rewards attention out of proportion to its line-item size. When there is no public number, the only check that exists is the one you run.

One more thing resets your history: when the refrigerant you stock changes, and in this trade it does change, your entire comparison base goes to zero. A new blend is a new SKU with no prior purchases behind it, which means the first price you are given is the only price you know. Write down that first price, the date, and the supplier, on the day you buy it. Twelve months later that note is the only benchmark you will have.

What is actually on a refrigerant line

Refrigerant is unusual on an invoice because the material charge is only part of the charge. Read a jug purchase carefully and you can find several distinct components:

The refrigerant itself, usually priced per jug rather than per pound, which is the first place a comparison quietly breaks.
A cylinder deposit or core charge, refundable when the empty goes back. This is a deposit, not a cost, but only if the return actually gets credited. That mechanism is its own reliable leak and is worked through in core charges, deposits and environmental fees.
Environmental or recovery fees, which vary by supplier and by jurisdiction.
Hazmat or freight handling, which can appear on a delivered order and not on a will-call pickup of the same material.

Two of those four are not the price of the product, and one of them is supposed to come back to you. If your job costing rolls all four into a single material number, your cost per pound is wrong, your comparison between suppliers is wrong, and any deposit you never got back is invisible. The empties are the part shops lose most often, because they go back on a truck weeks after the purchase, and a promised credit that nobody tracks is a credit that does not arrive. If you have a stack of those, use the supplier credit request email template and clear them in one sitting.

Line set tracks copper, and copper has moved

Line set is copper tube. When copper moves, line set follows, on a lag set by whatever your supplier paid for its current inventory.

From the BLS copper and brass mill shapes series, not seasonally adjusted, 2026 figures preliminary:

Month	Index	Change from Jan 2025
Jan 2025	645.990	baseline
Jun 2025	637.408	-1.3%
Dec 2025	712.565	+10.3%
Jan 2026	747.384	+15.7%
Jun 2026 (P)	803.275	+24.3%

Two readings matter here. The first is the size: up roughly a quarter in eighteen months. The second is the shape, or the lack of one. Copper dipped in the spring of 2025 and climbed hardest into the winter. There is no reliable seasonal pattern to plan around, which means the calendar is not a useful guide for buying line set. The index is.

The AGC of America reported the same direction from the construction side, putting copper and brass mill shapes up 26.8% year over year in May 2026, inside an overall 8.4% annual rise in inputs to nonresidential construction, against contractor bid prices up only 3.5%. That gap between what inputs cost and what bids recover is the entire margin story for a service shop, and consumables are where it leaks first.

Practical consequence: a 25 foot 3/8 by 3/4 line set you priced into a change-out template eighteen months ago is not the price you are paying today. If your flat-rate book still carries the old number, you are eating the difference on every install, silently, which is a different failure from being overcharged and it is entirely yours to fix. The same logic applies to how long a bid can stay valid when copper is moving, covered in how long should a bid stay valid.

Sheet metal moves on a first-half calendar

Duct stock behaves differently from copper. Use the commodity series that is actually about duct rather than the broad sheet metal basket: BLS publishes sheet metal air-conditioning ducts and stove pipe (WPU10730120), back to December 2003.

2025: January 289.683 to June 300.699, up 3.8%. Then flat: December 300.831, up 0.04% across the entire second half.
2026: January 300.831 to June 304.143 preliminary, up 1.1%.
Year over year, June 2025 to June 2026: up 1.1%.

Two consecutive years with the increase concentrated in the first half and the second half nearly flat. If you fabricate and you have storage, that shape is actionable in a way copper’s is not: buying duct stock ahead in the fall is buying at the flat part of the curve. Whether that is worth the cash and the rack space is a judgment about your own working capital, not a universal rule, and for a shop running tight on cash it is not the right move.

Note the size, too. Duct rose 1.1% over those twelve months while steel mill products rose from 309.231 to 361.439 preliminary, about 17%. The raw coil moved fifteen times as fast as the fabricated duct. If your duct pricing came up anything like steel this year, “the mill raised us” is not the whole explanation. The broader sheet metal products basket (WPU1073) sits between the two at 337.053 to 353.935 preliminary, up 5.0%, which is why it is the wrong series to quote at a duct rep.

While you are checking duct stock, check PVC too, and use the commodity series rather than the manufacturing index. Plastics pipe (WPU07210603) ran 171.280 in January 2026 to 182.609 preliminary in June, up 6.6% in six months, and plastics pipe fittings and unions (WPU07210604) ran 334.420 to 354.724 preliminary, up 6.1%. Neither splits PVC out from CPVC or PEX, so read them as the whole plastic pipe category. Condensate line and drain fittings are small money per job and constant money per year.

Why these three never get checked

Look at how material actually flows through an HVAC shop and the pattern is obvious.

Material	How it is bought	Is it quoted?	Does anyone check the unit price?
Condenser, air handler, furnace	Ordered against a quote or a job	Usually	Sometimes, against the quote
Line set	Counter run or truck stock	Rarely	Almost never
Refrigerant	Counter run, jug at a time	No	Almost never
Sheet metal and duct stock	Standing stock order	Sometimes	Rarely, and usually only on the total
Fittings, tape, hangers, whips	Counter run	No	No

Everything with a quote behind it has a document to check against. Everything without one has nothing. That is the entire explanation, and it is why a category can drift 20% over a year inside a shop that audits its equipment invoices carefully. The check has no anchor.

The same structural gap shows up in job costing. Material bought on a counter run frequently never gets coded to a job at all, which means it lands in overhead, which means the job looks more profitable than it was and the next bid is built on a number that was never true. That failure mode is the reason unquoted consumables deserve a control even though each line is small.

Build the price history that does not exist

An hour of work, once, then ten minutes a month.

Pick ten SKUs, not a hundred. The jug you buy most, two line set sizes, your standard duct gauge and one fitting size, plus whatever four items show up on the most counter tickets. Ten is maintainable. A hundred is a project you will abandon in March.
Normalize every one to a comparable unit. Refrigerant per pound, not per jug. Line set per foot, not per coil. Duct per pound or per sheet at a stated gauge. If the pack size changes and you are tracking per pack, the price change disappears and you will never see it.
Strip the non-material lines out. Deposits, environmental fees, hazmat handling and freight get tracked separately. They are real costs, but mixing them into unit price makes the unit price useless for comparison.
Record the pricing basis. Contract, counter, quoted, or a second supplier. Most of the variance you find will be explained by this column, not by the market, and the mechanics of that are covered in contract price versus counter price.
Check the ten against the indexes quarterly. Copper for line set and fittings, sheet metal for duct, your own history for refrigerant since there is nothing else. Fifteen minutes.
Update your flat-rate book and your bid templates when the check moves. This is the step that turns the tracking into money. A price history nobody prices off is a hobby.

Two rules keep the file honest. Only compare a SKU to itself, never to a similar item, because a substitution is a different product with a different price and comparing across them produces noise that looks like creep. And date every entry with the purchase date rather than the invoice date, since an invoice for material picked up three weeks earlier will place the price in the wrong month.

What to ask your supplier about consumables

When you take this to your rep, price per unit is not the only lever, and on consumables it is often not the best one. Raiven’s rundown of negotiation levers with HVAC suppliers names several that apply directly to this category: shipping cost, bulk pricing on committed volume, delivery speed, and aggregating demand through a group.

Translated to a counter conversation, with your ten-SKU file in hand:

Put the ten SKUs on a written price sheet with an effective date, so a counter transaction has something to look up.
Ask what annual volume moves each one to the next tier, and whether truck stock replenishment counts toward it.
Ask for the deposit and return process in writing, including how a credit will appear and how long it takes.
Ask whether a will-call pickup and a delivered order price identically on these items, because frequently they do not.
Ask what the freight threshold is, since consumables are exactly the orders that fall under it.

None of that is adversarial and none of it needs leverage you do not have. It is the same conversation described in negotiating with your supply house, applied to the part of your spend nobody negotiates because nobody measures it. Reps deal with contractors who track their prices all day, and being one of them is not a threat to the relationship. It is the shortest route to a straight answer.