New Construction HVAC Guide for the Okanagan Valley

When you hire a general contractor to build a home, the HVAC system may arrive as one line in a much larger contract. That does not mean you should wait until installation to learn who is designing it, which company is doing the work, or what the price includes.

The best time to discuss the HVAC subtrade is before signing the construction contract or approving the mechanical allowance. Depending on the contract and the builder’s process, you may be able to request a specific HVAC contractor, approve the proposed company, or compare alternatives. Any arrangement still needs to preserve clear responsibility for permits, scheduling, inspections, warranty coverage, and the completed home.

This guide explains how heating, cooling, and ventilation move through a new-home project, how to evaluate the people behind the proposal, and which documents to request before final payment and handover.

Can You Choose the HVAC Contractor for Your New Home?

Vernon AC works on new-construction HVAC projects in the Okanagan. Project fit depends on location, construction stage, system scope, and scheduling.

Possibly, but it depends on the construction contract and when you raise the question. A homeowner should not assume either that the general contractor’s preferred HVAC company is mandatory or that an outside company can be substituted after work begins without consequences.

There are three common ways the relationship can be structured:

Builder-selected subtrade

Who contracts with the HVAC company?: The general contractor selects and manages the HVAC company.

What the homeowner should clarify: Ask who the company is, what qualifications and new-build experience it has, what design documents are included, and whether you can review the proposal before approval.

Homeowner-nominated, builder-managed subtrade

Who contracts with the HVAC company?: The homeowner requests or helps select the company, but the general contractor contracts with and coordinates it.

What the homeowner should clarify: Confirm any price difference, builder markup, schedule requirements, responsibility for changes, and who carries the workmanship and warranty obligations.

Homeowner-direct HVAC contract

Who contracts with the HVAC company?: The homeowner contracts separately with the HVAC company.

What the homeowner should clarify: Put scheduling, site access, permits, insurance, payment, deficiencies, warranty interfaces, and responsibility for delays or damage in writing. Confirm that the builder and home-warranty provider accept the arrangement.

The second arrangement can give the homeowner meaningful choice while keeping one construction manager responsible for coordination. The right model depends on the builder, the contract, and the warranty provider.

In British Columbia, a custom-home general contractor is normally responsible for registering and enrolling the new home in warranty insurance. BC Housing advises that the licensed general contractor, rather than the custom-home client, handles that enrolment.

Before appointing a separate subtrade, ask the builder and warranty provider how the change will affect coverage, inspections, and responsibility. Get the answer in writing.

This article provides general education, not legal advice about a particular construction contract.

Who Will Actually Work on Your HVAC System?

A new-home HVAC installation may involve certified journeypersons, registered apprentices, and helpers performing appropriate support work. That crew mix is not, by itself, evidence of good or poor quality.

What matters is whether each person is qualified or registered for the work they perform, receives the required supervision, and works under an accountable lead.

Apprenticeship is how skilled tradespeople gain supervised field experience. General helpers can also support a project without being qualified to perform every trade task.

The concern begins when unidentified, unregistered, or unqualified workers are assigned work outside their permitted scope, or when no qualified person is clearly supervising and accepting responsibility.

In British Columbia, refrigeration and air-conditioning mechanic, Gasfitter Class A and Class B, and sheet-metal worker are among the compulsory trades covered by Skilled Trades Certification. People performing work within the defined scope of these trades must meet the current certification, apprenticeship, or authorization requirements. Temporary-authorization and recognized training-program exceptions may apply.

Employers must also meet applicable supervision requirements. The current general maximum for covered electrical and mechanical trades is two apprentices to each journeyperson, subject to Skilled Trades BC’s stated exemptions. SkilledTradesBC explains the current requirements.

Design or project lead

Appropriate contribution: Owns the system design, coordinates changes, and identifies applicable requirements.

What the homeowner should ask: Who approved the design, and who must approve a change?

Certified journeyperson or otherwise authorized worker

Appropriate contribution: Performs and takes responsibility for work within the person’s recognized scope.

What the homeowner should ask: Which qualified person is accountable for each regulated or compulsory-trade component?

Registered apprentice

Appropriate contribution: Learns and performs trade work with the required supervision and within the apprenticeship framework.

What the homeowner should ask: Who is supervising the apprentices, and how is completed work reviewed?

Helper or general labourer

Appropriate contribution: Supports material handling, site preparation, or other tasks the person is permitted and competent to perform.

What the homeowner should ask: How does the contractor ensure support workers are not assigned work requiring qualifications they do not hold?

Startup or commissioning lead

Appropriate contribution: Verifies that equipment, controls, airflow, ventilation, and documented settings operate as intended within the agreed scope and to the manufacturers requirements.

What the homeowner should ask: Who completes the final testing, and what results will you receive?

Homeowners do not need to micromanage every worker or insist that a journeyperson personally perform every task. They should be able to identify the qualified lead, understand how less-experienced and support workers are supervised, and know who is accountable if the installation does not match the approved design.

A higher price should come with a clearly defined scope and an accountable process. The added design, coordination, labour, or verification should be visible in the proposal.

Likewise, a lower bid should not depend on unqualified workers performing work outside their role.

Understand Who Is Responsible for Each Part of the HVAC System

Several people may influence the system, but their roles are different.

Homeowner

Typical HVAC responsibility: Defines comfort priorities, equipment efficiencies, budget, room use, noise concerns, and future plans. Approves selections and changes according to the contract.

What the homeowner should verify: Your requirements and approvals are recorded, not left as verbal assumptions.

Licensed residential builder or general contractor

Typical HVAC responsibility: Manages the overall contract, schedule, site, subtrades, warranty enrolment, and coordination between building systems.

What the homeowner should verify: The builder is in good standing and the home is properly enrolled or exempt. Use the BC Housing builder and new-home registries.

HVAC contractor or mechanical designer

Typical HVAC responsibility: Calculates loads, develops the mechanical approach, selects equipment and distribution, coordinates installation, and verifies operation within the agreed scope.

What the homeowner should verify: The company has relevant new-construction experience and identifies who owns design, installation, and commissioning.

Energy advisor

Typical HVAC responsibility: Models the home against the applicable energy requirements and reconciles specified and installed assemblies and systems.

What the homeowner should verify: The energy model and HVAC proposal use the same envelope and equipment assumptions.

Installation crew and supervisors

Typical HVAC responsibility: Certified workers, registered apprentices, and appropriate support workers complete assigned tasks within their qualifications, registrations, and permitted roles.

What the homeowner should verify: The qualified lead is identified, supervision is explained, and covered workers meet current SkilledTradesBC and regulatory requirements.

Building and safety authorities

Typical HVAC responsibility: Review permit submissions and inspect or receive declarations for work within their jurisdiction.

What the homeowner should verify: Required permits are open before work begins and closed at completion.

Responsibility becomes risky when everyone assumes another party handled the calculation, permit, inspection, or final test. Ask for a simple responsibility list before construction starts.

How to Evaluate a Proposed HVAC Subtrade

1. Verify the Company and Accountable Qualifications

Ask for the legal business name, insurance information, WorkSafeBC information, and the people responsible for design, supervision, and regulated work.

Verify the licensed residential builder separately through BC Housing. For regulated gas or electrical work, use Technical Safety BC’s contractor registry and confirm that the licence covers the required scope.

Do not rely only on a logo, equipment brand, or the phrase “licensed and insured.” Ask which licence applies to which work and who will take out each permit.

2. Look for Relevant New-Construction Experience

Replacing equipment in an existing home and coordinating HVAC for a new build are different assignments.

New construction requires the contractor to work from evolving plans, coordinate structure and finishes, reserve service access, sequence rough-in, and reconcile field changes.

Ask for examples of similar homes and references from homeowners, builders, or designers. Useful similarities include:

• Construction type
• Approximate size
• Number of storeys
• System type
• Energy target
• Okanagan climate conditions

3. Ask What Design Work Is Included

The heating and cooling system should be selected for the home being built, not by square footage alone. Orientation, windows, insulation, airtightness, ceiling height, and room use affect the load.

Natural Resources Canada recommends using a recognized sizing method such as CSA F280 and having the calculations completed by a TECA or HRAI certified professional.

Ask whether the proposal includes:

• Room-by-room heating and cooling load calculations
• Equipment capacity checked at the project’s design conditions
• Duct sizes, routes, supply outlets, and return-air paths, where applicable
• Ventilation, exhaust, and filtration coordination
• Indoor and outdoor equipment locations
• Electrical, gas, controls, and condensate requirements
• Noise, snow, drainage, and service-access considerations
• Updated design review if the envelope or plans change

A model number without the assumptions behind it is not a complete design.

4. Compare Scope, Not Just the Total Price

Two proposals can use the same equipment brand and still include very different work. Compare each line that affects the finished system:

Design

Questions to ask: Are load calculations, mechanical drawings, and revisions included?

Equipment

Questions to ask: Are exact model numbers, capacities, efficiency ratings, and approved substitutions stated?

Distribution

Questions to ask: Are ducts, returns, grilles, dampers, line sets, and insulation clearly included?

Ventilation and IAQ

Questions to ask: Who supplies and installs ventilation, exhaust, controls, and filtration?

Other trades

Questions to ask: Who provides electrical feeds, gas piping, drains, roof penetrations, pads, and framing changes?

Permits

Questions to ask: Which permits, fees, inspections, and declarations are included, and who is responsible?

Installation team

Questions to ask: Who supervises, which qualified roles are required, and who accepts responsibility for deficiencies?

Startup and handover

Questions to ask: Are testing, balancing, commissioning, homeowner instruction, registrations, and documents included?

Changes and exclusions

Questions to ask: What triggers a change order, markup, schedule extension, or additional charge?

The lowest bid may omit important work. A higher bid may be justified, but only if the added design, coordination, equipment, labour, or verification is visible in the scope.

5. Confirm How Problems Will Be Handled

Ask who responds if:

• A room cannot maintain temperature
• Airflow is noisy
• Equipment differs from the approved model
• An installation conflicts with framing or cabinetry

The contract should explain the deficiency process, payment holdbacks where applicable, warranty contacts, and who pays to correct work that does not match the approved scope.

Follow the HVAC Work Through the Build

You do not need to manage the trades yourself to remain informed. Use a few stage gates with the general contractor and HVAC company.

Before the construction contract

What should be happening: HVAC selection process, allowances, and approval rights are discussed.

Homeowner checkpoint: Put any right to review, nominate, or approve the HVAC contractor and major equipment in writing.

Concept and developed design

What should be happening: Comfort goals, envelope assumptions, loads, ventilation, and system options are established.

Homeowner checkpoint: Review the system approach and ask who prepared the calculations. Do not approve from a brand name alone.

Before permits and ordering

What should be happening: Mechanical documents, exact equipment, and responsibilities are coordinated.

Homeowner checkpoint: Confirm that the energy model, construction drawings, and HVAC proposal use consistent assumptions.

Before framing is finalized

What should be happening: Ducts, returns, line sets, drains, intakes, exhausts, controls, and service clearances are coordinated with structure and finishes.

Homeowner checkpoint: Ask whether the HVAC contractor reviewed the framing, truss, cabinetry, and ceiling plans.

Rough-in

What should be happening: Mechanical work is installed and coordinated with plumbing, electrical, roofing, and insulation.

Homeowner checkpoint: Request notice of material substitutions or route changes. Photograph accessible work before it is concealed, with the builder’s permission.

Before drywall and finishes

What should be happening: Rough-in is reviewed, penetrations and sealing are addressed, and approved changes are documented.

Homeowner checkpoint: Confirm that required inspections or contractor declarations are complete before work is covered.

Startup and commissioning

What should be happening: Equipment, controls, airflow, drains, ventilation, and operating modes are tested.

Homeowner checkpoint: Ask for results, not only confirmation that the equipment turns on.

Handover

What should be happening: The owner receives instructions, warranty information, model details, and maintenance requirements.

Homeowner checkpoint: Collect the complete HVAC handover package before final closeout.

The BC Building Code sets minimum requirements for most buildings in the province, while energy and submission requirements can depend on the permit date and local government.

The City of Vernon’s residential checklist and Regional District of North Okanagan building information illustrate why energy-advisor, ventilation, and permit coordination should begin early.

Confirm the requirements for the project’s exact address with the authority having jurisdiction.

HVAC Decisions That Should Not Be Left Until Rough-In

Heating and Cooling Loads

The system must be based on the expected envelope and room-by-room needs. If windows, insulation, airtightness, or the floor plan change, ask whether the load calculation and equipment selection need to change.

Air Distribution

Each room needs a workable path for conditioned air. Ducted systems also need return-air paths.

Chases, beams, bulkheads, high ceilings, large windows, and closed bedroom doors can all affect distribution.

Ventilation and Filtration

New homes need a deliberate ventilation strategy. Heating and cooling, kitchen and bathroom exhaust, whole-home ventilation, filtration, and pressure balance should be coordinated rather than selected separately.

Okanagan smoke events add another design question: how will occupants reduce particle entry and filter recirculated air when outdoor air quality is poor without interfering with required ventilation?

💡 Our guide to improving indoor air quality in a North Okanagan home explains why source control, ventilation, and filtration have different jobs.

Equipment and Service Locations

Indoor and outdoor units need appropriate space, drainage, airflow, sound control, and maintenance access.

Filters, drains, coils, and controls should remain reachable after walls, storage, and landscaping are complete. The original equipment will also need eventual replacement.

Electrical or Fuel Requirements

Equipment selection affects electrical capacity, gas work, backup heat, controls, and future electrification plans.

These decisions should be coordinated before panels, utility services, and finished spaces are locked.

Warning Signs Before You Approve the HVAC Proposal

Pause and ask for clarification if:

• The system is sized only from floor area or a rule of thumb.
• No one can identify who prepared or approved the design.
• The contractor will not provide exact equipment or a substitution process.
• The proposal does not state who handles ducts, ventilation, electrical, gas, drains, or permits.
• The builder or HVAC company cannot explain supervision and accountability.
• Important promises are verbal rather than included in the contract or change order.
• Routes and equipment locations will be decided after framing.
• Startup means only switching the unit on.
• You are asked for final payment without the permit, testing, warranty, and handover documents required by the contract.

One warning sign does not automatically prove poor work. It means the responsibility or deliverable needs to become clear before construction makes the decision expensive to change.

What Should Be in the HVAC Handover Package?

The exact documents depend on the system and jurisdiction, but ask the builder and HVAC contractor for the applicable items:

• Final equipment model and serial numbers
• Approved mechanical drawings and documented field changes
• Load-calculation summary
• Permits, inspection records, and contractor declarations
• Startup, airflow, balancing, or commissioning records
• Thermostat, zoning, and ventilation settings
• Manufacturer and labour warranty information
• Product registrations, where applicable
• Filter sizes and replacement instructions
• Maintenance requirements and service contacts
• An orientation covering normal operation, backup heat, and warning conditions

Keep these records with the home. They make future maintenance, warranty questions, renovations, and equipment replacement easier to manage.

Clarify the HVAC Team Before the Decisions Are Locked

The goal is not to distrust the general contractor or judge the installation crew by job title alone.

It is to know:

• Who is responsible for the design
• Whether each person is working within an appropriate role
• How the crew is supervised
• What the quoted price includes
• How performance will be verified

Raise these questions before signing the construction contract or approving the mechanical allowance.

A capable builder should be able to explain how the HVAC subtrade is selected and how an alternative would affect price, schedule, coordination, and warranty responsibility.

Building a home in the Okanagan Valley and reviewing the HVAC plan? Send us the project location, construction stage, and proposed system. We will review the scope with you and confirm the right next step before the major decisions are locked. Contact our team about your new build.