Single-family residential HVAC has been in correction for 18 months. But across the hall — in the multi-family housing sector — a different story is playing out. Multi-family housing construction has been outperforming single-family for the past three years, driven by affordability pressures that have shifted household formation toward rental apartments rather than homeownership. Every new apartment unit is an HVAC installation opportunity. And every building full of apartment units is a commercial service contract waiting to be signed.

For HVAC contractors who have been focused on the residential replacement market, the multi-family sector represents a genuinely distinct opportunity with different economics, different decision-makers, and different service requirements than either residential or traditional commercial HVAC work. Here is the 2026 picture.

The Multi-Family Construction Numbers

Multi-family housing starts — buildings with five or more units — have remained elevated relative to single-family starts throughout the 2024 to 2026 period. Several factors are driving this divergence:

• Affordability shift: With median home prices significantly above pre-pandemic levels and mortgage rates still elevated, a larger portion of US household formation is occurring in rental rather than ownership housing. This structural shift in housing demand supports multi-family construction even as single-family activity has slowed.

• Urban infill development: Major US cities continue to approve multi-family development projects that respond to housing shortages. Infill development — building apartments on underutilised urban land — is a construction category that is largely independent of suburban single-family market conditions.

• Institutional investment: Large institutional real estate investors — REITs, pension funds, and private equity real estate platforms — have maintained investment in multi-family residential assets as an inflation-hedging asset class. That institutional capital supports new construction even when speculative homebuilding slows.

Multi-family housing starts have outperformed single-family construction through the 2024 to 2026 period, driven by affordability constraints shifting household formation toward rental housing — creating a sustained pipeline of HVAC installation opportunities in new apartment developments and a growing commercial service contract market in the existing multi-family installed base.

What Makes Multi-Family HVAC Different

Multi-family HVAC has distinct characteristics that contractors new to the sector need to understand:

• Scale and standardisation: A 200-unit apartment building may have 200 identical PTAC units or a central system serving all units from a mechanical penthouse. The scale creates efficiency in service — one contractor visit can address multiple units — but also requires the contractor to stock specific parts for the building's equipment.

• Property manager as decision-maker: In multi-family, the HVAC purchasing decision is made by the property manager or building owner — not the individual resident. This is a B2B sale to a professional buyer who is managing multiple properties and thinking about portfolio-level economics, not a homeowner making an emotional decision about their home.

• Service contract value: A property manager who trusts a contractor with 200 HVAC units across multiple properties is a high-lifetime-value customer. Multi-family service contracts are larger, more stable, and longer-duration than typical residential service agreements.

• Response time requirements: Rental housing operators have legal obligations to maintain habitable conditions for tenants — which means HVAC failures get escalated faster and need faster response than typical residential service calls. Contractors who can commit to defined response time SLAs for multi-family clients have a competitive advantage.

How to Pursue Multi-Family HVAC Business

The path into multi-family HVAC business is different from residential or traditional commercial:

• Target property management companies, not building owners: Most multi-family HVAC decisions are made by professional property managers who oversee portfolios of buildings. Building a relationship with a property management company that manages 20 buildings gives you access to 20 service contracts through a single relationship.

• Develop PTAC competency: Packaged terminal air conditioners — the through-wall units standard in hotels and many apartment buildings — have specific installation, service, and parts requirements that differ from split systems. Developing PTAC competency opens a large segment of the multi-family market.

• Offer portfolio pricing: Property managers respond to portfolio-level value propositions. A service agreement priced per unit with volume discounts for larger portfolios is more compelling than per-building pricing that requires separate negotiation for each property.

• Build references in multi-family: The multi-family market is relationship-driven. Property managers refer contractors to colleagues, and references from other property managers are more persuasive than advertising or cold outreach.

Frequently Asked Questions

Is multi-family HVAC a good market for contractors?

Yes. Multi-family HVAC offers higher-value service contracts than residential work, more stable recurring revenue from property management relationships, and a construction pipeline that has remained strong while single-family has corrected. The market requires different sales approach and specific technical capabilities but offers attractive economics for well-positioned contractors.

Who makes HVAC decisions in apartment buildings?

HVAC decisions in multi-family buildings are typically made by property managers or asset managers who oversee one or multiple properties on behalf of building owners. Building a relationship with professional property management companies — rather than individual building owners — is the most efficient path to multi-family HVAC business.

What HVAC systems are used in apartment buildings?

Multi-family HVAC systems vary by building type and age. Common configurations include individual PTAC units (packaged terminal air conditioners) for each apartment, centrally ducted systems in newer developments, and in higher-end properties, mini-split systems or VRF systems for individual zone control. Older buildings frequently have through-wall PTAC units; newer construction increasingly uses split or heat pump systems.