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Price Increases September 2026: Manufacturer Letters by Trade
56 manufacturer price-increase letters from 55 brands take effect in September 2026, grouped by trade. Every row links to the original letter.
56letters
55brands
12trades
5.5%median stated increase
By trade: HVAC Equipment (12) · Drywall (8) · Plumbing Supply (6) · Roofing Material (6) · Fire Sprinkler & Fire Protection (5) · Pool Supply (5) · Electrical Supply (4) · Fencing (3) · Siding (3) · Insulation (2) · Water Heater (1) · Window & Door (1)
HVAC Equipment (12) HVAC September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Amana PTAC | 14.24% | Johnstone Supply (Muskegon Group) | |
| Sep 1, 2026 | Bard Manufacturing | Service Parts Price increase on service parts only, effective September 1, 2026. |
see letter | ACHR News |
| Sep 1, 2026 | Nu-Calgon | 100% | Johnstone Supply (Muskegon Group) | |
| Sep 1, 2026 | OmegaFlex | TracPipe 6% price increase on all TracPipe System products, effective September 1, 2026. |
6% | ACHR News Supply House Times / PM Magazine |
| Sep 3, 2026 | Jones Stephens | 5-15% price increase, varying by product group, effective September 3, 2026. | 5-15% | ACHR News Supply House Times / PM Magazine |
| Sep 3, 2026 | NTI | 30% price increase on its oil and wood heating products, effective September 3. Product code 3260006-C380 c-w F20 Burner pkg. is excluded and will remain at current price levels. | 30% | Supply House Times / PM Magazine letter · Bartle & Gibson (Canada) |
| Sep 7, 2026 | Metal Fab B-Vent | 5% | Conklin Metal Industries | |
| Sep 14, 2026 | Midwest | AIR | 2% | Conklin Metal Industries |
| Sep 18, 2026 | Angle | 7% | Conklin Metal Industries | |
| Sep 21, 2026 | M&M Manufacturing | product offerings Up to 6% price increase, effective September 21, 2026. |
Up to 6% | letter · ABC Supply ACHR News |
| Sep 21, 2026 | Snappy | Up to 6% price increase, effective September 21, 2026. | Up to 6% | ACHR News |
| Sep 23, 2026 | Stamped Fittings | 10% | Conklin Metal Industries |
Drywall (8) Drywall & Interiors September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Amico | Metal Framing, Studs & Tracks | see letter | letter · ABC Supply Interiors |
| Sep 1, 2026 | ClarkDietrich | Steel-based products | see letter | letter · Negwer Materials letter · ABC Supply Interiors letter · Kamco Supply (New York) |
| Sep 1, 2026 | MBA Building Supplies | see letter | letter · Negwer Materials | |
| Sep 1, 2026 | MarinoWare | see letter | letter · ABC Supply Interiors letter · Kamco Supply (New York) | |
| Sep 1, 2026 | Telling Industries | Metal Framing, Studs & Tracks | see letter | letter · ABC Supply Interiors |
| Sep 14, 2026 | USG | Joint Treatment & Interior Finishing | see letter | letter · ABC Supply Interiors Universal Supply letter · Kamco Supply (New York) |
| Sep 28, 2026 | Cemco | see letter | letter · Negwer Materials letter · ABC Supply Interiors | |
| Sep 30, 2026 | John Manville | see letter | letter · Negwer Materials |
Plumbing Supply (6) Plumbing & PVF September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Amtrol | 3-7% increase on residential and non-residential products, effective September 1. | 3-7% | Supply House Times / PM Magazine letter · Bartle & Gibson (Canada) |
| Sep 1, 2026 | Guardian | Average 6% increase on all products. | Average 6% | Cooney Brothers |
| Sep 1, 2026 | Kunkle | General price increase on select products. | 4.3% | Cooney Brothers Supply House Times / PM Magazine |
| Sep 1, 2026 | Liberty Pumps | Average 5% increase, effective September 1. | Average 5% | Supply House Times / PM Magazine letter · Bartle & Gibson (Canada) |
| Sep 1, 2026 | Stelpro | Canada pricing Stelpro will introduce a new price list with an average increase of 7%, effective September 1, 2026. The adjustment reflects continued pressure from labour, procurement, transpo… |
average increase of 7% | letter · Bartle & Gibson (Canada) |
| Sep 7, 2026 | Quality Pipe Products | Price increase on A-106 seamless pipe nipples, effective September 7. | see letter | Supply House Times / PM Magazine |
Roofing Material (6) Roofing September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 17, 2026 | Malarkey | Roofing Products | Surcharge $450 per truckload | letter · ABC Supply |
| Sep 20, 2026 | NPC Colored Sealants | Colored Sealants | 8-9% | letter · ABC Supply |
| Sep 21, 2026 | Atlas | Shingles, Underlayments | Surcharge $500 per truckload | letter · ABC Supply letter · Gulfeagle Supply |
| Sep 28, 2026 | GAF | Commercial roofing Freight Surcharge Increase |
Surcharge $1,100 | letter · ABC Supply letter · Gulfeagle Supply |
| Sep 28, 2026 | National Gypsum | Roof Boards | see letter | letter · ABC Supply |
| Sep 28, 2026 | Siplast | Commercial roofing Freight Surcharge Increase |
Surcharge $1,100 | letter · ABC Supply letter · Gulfeagle Supply |
Fire Sprinkler & Fire Protection (5) Fire Protection September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 3, 2026 | Nucor | Tubular Products | $80/ton, 5% | letter · Ferguson Fire & Fabrication |
| Sep 3, 2026 | Wheatland Tube | Pipe products | $80/ton, 5% | letter · Ferguson Fire & Fabrication |
| Sep 4, 2026 | Bull Moose | sprinkler pipe | min 5% | letter · Ferguson Fire & Fabrication |
| Sep 4, 2026 | Fayette Pipe | Steel Pipe | $80/ton | letter · Ferguson Fire & Fabrication |
| Sep 4, 2026 | Viking SupplyNet | Various products | 5% | letter · Viking Group |
Pool Supply (5) Pool September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 14, 2026 | GLI Pool Products | Inground Liners | 3% | Heritage Pool Supply |
| Sep 14, 2026 | Hayward Industries | 0.5-2.5% | Heritage Pool Supply | |
| Sep 14, 2026 | Latham Pool Products | Inground Liners | 3% | Heritage Pool Supply |
| Sep 14, 2026 | Zodiac Pool Systems | 0-3% | Heritage Pool Supply | |
| Sep 15, 2026 | King Innovation | 2-8% | Heritage Pool Supply |
Electrical Supply (4) Electrical September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Arlington Industries | Canada pricing Arlington will implement a standard 8% price increase across its product line effective September 1, 2026. Some products may receive higher or lower adjustments. |
8% | letter · Bartle & Gibson (Canada) |
| Sep 1, 2026 | East Electrical Supply | Canada pricing East Electrical Supply implemented a 5–7% price increase on all conduit products effective September 1, 2026. The adjustment reflects rising fuel, transportation, tariff and dut… |
5–7% | letter · Bartle & Gibson (Canada) |
| Sep 1, 2026 | Leviton | Canada pricing Leviton will implement pricing adjustments effective September 1, 2026. Copper product groups, including copper cable, will increase 8%, while select fibre products, including a… |
see letter | letter · Bartle & Gibson (Canada) |
| Sep 9, 2026 | Lennox CSS | Canada pricing Effective September 9, 2026, Lennox CSS Canada is applying a 30% tariff to affected U.S.-origin products across its HVAC and Electrical brands that are subject to Canadian count… |
30% | letter · Bartle & Gibson (Canada) |
Fencing (3) Fencing September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | American Tube and Pipe | American Tube and Pipe will implement a price increase of 5%, effective September 1, 2026, on all products ... | 5% | letter · Convoy Supply (US) |
| Sep 1, 2026 | Ameristar | Ameristar will implement a price increase effective September 1, 2026, on the following products ... | see letter | letter · Convoy Supply (US) |
| Sep 1, 2026 | Wheatland Tube | Wheatland Tube will implement a price increase of approximately 5%, effective September 1, 2026, on galvanized and colored products ... | approximately 5% | letter · Convoy Supply (US) |
Siding (3) Siding September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Cornerstone Building Brands | Vinyl Siding | 5% | letter · ABC Supply |
| Sep 4, 2026 | Mid-America | Shutters, Blocks and Vents has announced a price increase of approximately 5-7% on all Shutters, Blocks and Vents. We will adjust our prices with shipments on September 4, 2026. This increase does not app… |
approximately 5-7% | Universal Supply |
| Sep 16, 2026 | Tamlyn | XtremeTrim Product Line and 10% on all TamlynWrap Elite has announced a price increase of approximately 8% on all XtremeTrim Product Line and 10% on all TamlynWrap Elite. We will adjust our prices effective with shipments on Septembe… |
approximately 8%, 10% | Universal Supply |
Insulation (2) Insulation September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 1, 2026 | Knauf | Insulation | see letter | letter · ABC Supply Interiors |
| Sep 30, 2026 | Johns Manville | Polyiso Foam Sheathing | 8% | letter · Performance Pro Supply |
Water Heater (1) Water Heaters September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 8, 2026 | A. O. Smith | Canada pricing A. O. Smith Canada will apply a 10% tariff pass-through increase effective September 8, 2026, to all new orders for commercial storage tanks. Residential and commercial water he… |
10% | letter · Bartle & Gibson (Canada) |
Window & Door (1) Windows & Doors September 2026 →
| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Sep 10, 2026 | Wolf | Bilco Doors and accessories has announced a price increase of approximately 5% on all Bilco Doors and accessories. We will adjust our prices effective with shipments on September 10, 2026. |
approximately 5% | Universal Supply |
Frequently asked questions
Which manufacturers are raising prices in September 2026?
56 letters from 55 brands across 12 trades take effect in September 2026, including 4 surcharges. The first: Amana PTAC (Sep 1, 2026, 14.24%); American Tube and Pipe (Sep 1, 2026, 5%); Ameristar (Sep 1, 2026).
How big are the September 2026 price increases?
36 letters state a percentage: the median is 5.5% and the middle half fall between 5% and 8% (ranges counted at their midpoint).
Which trades have the most September 2026 increases?
HVAC Equipment (12), Drywall (8), Plumbing Supply (6), Roofing Material (6), Fire Sprinkler & Fire Protection (5).
Can I get these dates in my calendar?
Yes: subscribe to the all-letters calendar feed. Each letter is an all-day event on its effective date. 39% of the September 2026 letters take effect on the 1st.