FAQ

  • What HVAC services do you offer?

    We offer a complete range of HVAC services, including:

    Heating system repair and replacement

    Air conditioning repair and installation

    HVAC system installation and start-up

    Indoor air quality solutions

    ACCA Manual J load calculations

    ACCA Manual S equipment selection

    Preventive maintenance and system evaluations

    All work is performed with a focus on engineering-based design, comfort, and efficiency.

  • Do you perform load calculations before installing new HVAC equipment?

    Yes. Every new system we install is properly sized using an ACCA Manual J load calculation.
    This ensures your HVAC system is not oversized or undersized, which improves comfort, reduces energy costs, and extends equipment life.

    Many contractors skip this step — we do not.

  • Why are load calculations important for HVAC systems?

    Load calculations determine how much heating and cooling your home actually needs based on:

    Square footage

    Insulation levels

    Window type and orientation

    Air leakage

    Occupancy

    Without a proper load calculation, systems are often oversized, leading to:

    Higher utility bills

    Poor humidity control

    Short cycling

    Hot and cold spots

  • Isn’t bigger always better?

    No — and this is one of the most common misconceptions in HVAC.

    An oversized system:

    Turns on and off too frequently

    Struggles with humidity control

    Causes uneven temperatures

    Uses more energy

    Wears out faster

    Properly sized equipment, based on Manual J and Manual S calculations, delivers better comfort, lower utility bills, and longer equipment life. Bigger is not better — correct is better.

  • Do you service existing HVAC systems or only install new ones?

    We do both. SEMO Heat & Air LLC provides HVAC service and repair for existing systems as well as complete system replacements.

    If your system can be repaired safely and cost-effectively, we will tell you. If replacement is the better option, we will explain why.

  • What types of HVAC systems do you work on?

    We service and install:

    Heat pumps

    Air Conditioners

    Gas furnaces

    Electric furnaces

    Dual-fuel systems

    We also evaluate existing systems for safety, efficiency, and performance issues.

  • Do you offer indoor air quality solutions?

    Yes. We offer indoor air quality evaluations and solutions, including:

    Air filtration improvements

    Humidity control

    System airflow corrections

    Proper air quality starts with correct equipment sizing and duct performance, which we address during system evaluation.

  • Do you offer free estimates?

    We provide detailed proposals based on your home and system needs.
    For new installations, this includes load calculations and proper equipment selection, not just a simple equipment swap.

  • How long does an HVAC installation typically take?

    Most residential HVAC installations are completed in one day, depending on system type, duct conditions, and job complexity. We will outline the timeline clearly in your proposal.

  • Do you register equipment warranties?

    Yes. After installation:

    Manufacturer warranties are registered

    Equipment manuals are provided

    Homeowners are shown system components and basic maintenance requirements

  • Why should I choose SEMO Heat & Air instead of another contractor?

    SEMO Heat & Air is different because we combine:

    Engineering background

    Proper load calculations

    Correct equipment sizing

    Transparent recommendations

    We focus on long-term comfort and performance, not just replacing what’s already there.

  • How do I schedule service or request a proposal?

    You can:

    Call us directly

    Email us

    Use the contact form on our website

    We’ll respond promptly to discuss service, repair, or installation options.