HVAC shipments plunged through most of 2025. System prices nearly doubled since 2019. Technicians across the country reported the slowest seasons in recent memory. Distributors burned down inventory rather than place new orders. And contractors who had grown rapidly through the boom years of 2021 and 2022 suddenly found themselves managing for margin rather than capacity.

The data is clear: the HVAC industry is working through a meaningful market correction. Understanding it fully — what caused it, how severe it is, how it compares to prior cycles, and when recovery is likely — is not optional for any business trying to make sound decisions in 2026. This is the complete data picture.

The Correction in Numbers

The most reliable measure of residential HVAC market health is AHRI shipment data — the monthly unit volumes of central air conditioners, heat pumps, and gas furnaces shipped from manufacturers to distributors. The 2025 data tells an unambiguous story:

• Combined US central AC and heat pump shipments declined for nine consecutive months before the first year-over-year uptick in February 2026, when volumes reached approximately 639,000 units.

• Full-year 2025 residential HVAC shipments are estimated to have declined 12 to 18% from 2024 levels, which were themselves below the peak levels of 2022.

• Gas furnace shipments declined in parallel, compounding the impact on manufacturers whose revenues depend on the full residential heating and cooling system mix.

• HARDI distributor revenue data through late 2025 showed more resilience than shipment data alone would suggest — distributor revenues declined only approximately 1% year-over-year in October 2025, with Days Sales Outstanding stable at 38 days, indicating that while volume was down, pricing and credit conditions were holding.

US residential HVAC shipments declined for nine consecutive months through early 2026, with full-year 2025 volumes estimated 12 to 18% below 2024 levels. HARDI distributor revenue data showed only a 1% year-over-year decline in October 2025, with DSO stable at 38 days — indicating the revenue impact was less severe than unit volume data alone suggests.

What Caused It: Supply Overhang and Price Shock

The 2024 to 2026 HVAC correction has two primary causes that compounded each other:

The first is channel inventory overhang. During the supply chain disruptions of 2021 and 2022, distributors and contractors over-ordered equipment to protect against stock-outs. When supply chains normalised, the channel found itself with elevated inventory that took 18 to 24 months to work down. During that destocking period, factory orders — and therefore shipment data — fell sharply even though end-user demand was softer but not collapsed.

The second is consumer price shock. Average residential HVAC system replacement costs rose from $6,000 to $8,000 in 2019 to $12,000 to $15,000 by 2024 — an increase of 60 to 90% driven by raw material inflation, supply chain disruption costs, A2L refrigerant transition compliance expenses, SEER2 efficiency standard upgrades, and multiple rounds of manufacturer price increases. At those price levels, a segment of homeowners who would previously have replaced ageing equipment chose instead to repair and defer — compressing replacement demand.

The Bullwhip Effect Explained

The bullwhip effect describes how small variations in end-user demand produce amplified swings in upstream orders and inventory. In HVAC, it means that a 10 to 15% decline in actual consumer replacement activity can produce a 25 to 35% decline in factory shipments as the channel simultaneously reduces orders to work down excess inventory.

This is why the shipment data looks more severe than the actual consumer market experience. Technicians who expected a catastrophic slowdown in service calls often found the reality was more moderate — fewer replacement jobs, yes, but repair revenue remained strong as consumers maintained rather than replaced their equipment.

Understanding the bullwhip effect is important for reading the recovery. When factory shipments begin recovering, they will likely recover faster than actual consumer demand — as distributors begin restocking after working down inventory to below-normal levels. This restocking bounce can make the recovery look more robust than the underlying consumer market justifies, before settling into a more gradual normalisation.

How This Compares to Prior HVAC Down Cycles

The 2024 to 2026 correction is not the first HVAC down cycle and will not be the last. For context:

• 2008 to 2009: The financial crisis produced a more severe HVAC correction, with residential shipments declining approximately 25 to 30% at their trough. Recovery was slow, tied to the broader housing market recovery.

• 2015 to 2016: A mild correction followed a period of front-loading before efficiency standard changes took effect. Shipments declined approximately 8 to 12% before recovering.

• 2020 COVID shock: An initial sharp decline in early 2020 was followed by a rapid and strong recovery as consumers invested in home improvement and HVAC systems during lockdowns — an unusually strong demand surge that contributed to the subsequent inventory overhang.

The 2024 to 2026 correction is most comparable in severity to the 2008 to 2009 cycle in terms of duration, though its cause is fundamentally different — it is driven by price shock and inventory overhang rather than financial crisis-driven demand collapse.

When Does Recovery Come?

The industry consensus, reflected in OEM guidance, JPMorgan's sector analysis, and Capstone Partners' M&A data, points to 2026 as a stabilisation year and 2027 as the beginning of a more meaningful recovery. The specific recovery drivers:

• Equipment aging: The equipment installed during the 2015 to 2017 residential construction and replacement boom is now 9 to 11 years old — approaching the 10 to 12 year replacement cycle. This cohort represents a large pool of deferred replacement demand that will re-enter the market over the next two to three years regardless of consumer sentiment.

• Interest rate relief: If the Federal Reserve continues its rate reduction path, mortgage rates will ease, housing market activity will improve, and the consumer spending environment for large discretionary purchases will become more supportive.

• Channel normalisation: Distributor inventory levels are approaching normal. The headwind from destocking is ending, which means factory orders will better reflect actual end-user demand going forward.

• Deferred replacement returns: Consumers who repaired ageing equipment in 2024 and 2025 are pushing those systems closer to the point of failure. Each passing season increases the probability that they become replacement customers.

What Contractors Should Do Right Now

The correction is not over, but the trajectory is improving. The right response is not to wait for recovery — it is to position the business to capture it when it comes:

• Build recurring revenue through service agreements. The contractors who are most resilient through the correction are those with the highest service agreement penetration. Recurring revenue smooths the cycle and builds the customer relationships that convert to replacement jobs when equipment finally fails.

• Invest in repair capability. Repair revenue as a share of total HVAC revenue has grown from 21.6% to 31.3% in four years. The businesses outperforming the market in 2026 are those that invested in diagnostic capability, parts inventory, and repair pricing before the shift became obvious.

• Protect your balance sheet. The businesses that emerge from HVAC corrections in the strongest competitive position are those that managed cash carefully through the trough. Avoid over-extension on payroll, inventory, or capital expenditure until the recovery is clearly established.

Frequently Asked Questions

Is the HVAC market in a recession in 2026?

The HVAC market is experiencing a correction — a meaningful decline in residential shipments and replacement demand — rather than a recession in the broader economic sense. Full-year 2025 residential HVAC shipments are estimated 12 to 18% below 2024 levels, driven primarily by consumer price shock and channel inventory overhang rather than economic contraction.

When will the HVAC market recover?

Industry consensus points to 2026 as a stabilisation year, with a more meaningful recovery building through 2027. Key recovery drivers include the aging of equipment installed in 2015 to 2017, potential interest rate relief improving housing market activity, channel inventory normalisation, and the return of consumers who deferred replacement in 2024 and 2025.

Why did HVAC prices nearly double since 2019?

HVAC prices increased 60 to 90% between 2019 and 2024 due to raw material cost inflation, supply chain disruption costs, A2L refrigerant transition compliance expenses, SEER2 minimum efficiency standard upgrades, and multiple rounds of manufacturer price increases from Carrier, Lennox, Trane, and other major OEMs.

What is the bullwhip effect in the HVAC market?

The bullwhip effect in HVAC describes how small declines in end-user consumer demand produce amplified declines in factory shipment data as distributors simultaneously reduce orders to work down excess inventory. A 10 to 15% decline in consumer activity can appear as a 25 to 35% decline in AHRI shipment data during a destocking period.

How should HVAC contractors respond to the 2026 market correction?

Effective responses include building recurring revenue through service agreements, investing in repair capability and diagnostic skill, managing the balance sheet conservatively through the trough, and positioning the business to capture replacement demand when the 2015 to 2017 equipment cohort reaches end of life over the next two to three years.