HVAC Heating and Air Conditioning Services

Reliable Heating & Cooling for Homes and Businesses with S&D Mechanical

Cooling Services That Keep Your Home Comfortable and Your HVAC Running Efficiently

When your heating and air conditioning system starts acting up, you feel it fast—hot or cold spots, weak airflow, rising utility bills, and equipment that runs nonstop. S&D Mechanical HVAC delivers complete HVAC services designed to restore comfort quickly and keep your system running efficiently year-round. If you’ve been searching for HVAC services near me, our team is ready with proven solutions, clear communication, and workmanship built to last.

HVAC Service That Fixes the Cause (Not Just the Symptom)

  • Accurate troubleshooting + honest options for lasting results
  • Licensed & insured HVAC technicians you can trust
  • Heating and air conditioning repair that restores comfort fast
  • HVAC installation and maintenance when equipment is outdated or failing
  • Preventive HVAC maintenance that reduces surprise breakdowns
  • Comfort-focused performance: better airflow, steadier temperatures, smarter efficiency

Whether you use central air, a furnace, heat pump services, or ductless mini-split services, your comfort depends on the full system—thermostat controls, ductwork, airflow, filtration, refrigerant, electrical components, and safety checks. We treat it that way, delivering complete indoor comfort solutions for consistent climate control in every season.

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Complete AIR CONDITIONING Services

Your HVAC system is one connected setup. That’s why our heating and cooling services cover the whole picture—from diagnostics and repairs to replacements and long-term maintenance plans.

Central air conditioning unit next to brick wall and bushes on a bed of rocks.
Furnace and ductwork in a utility room. Metal ducting connects to the furnace. Brick wall on the left.
Furnace with open panels in a cluttered, unfinished attic. Wires and ductwork visible.
An outdoor HVAC unit on a concrete pad, against a light gray-sided building. A white exhaust pipe extends up the wall.
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Heating Services

From everyday tune-ups to urgent no-heat calls, we offer complete HVAC Heating Services for residential and commercial properties.

A person in blue overalls installing a radiator on a wall in a room.
Person working on a prosthetic leg with a machine in a workshop.
Person repairing an air conditioner unit, pointing at a clear glass component.
Radiators in various colors: black, yellow, and green, on a wood floor.
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Signs You Need Heating and Air Conditioning Service

If you’re noticing any of the issues below, schedule HVAC service before it becomes an emergency:


  • Warm air from vents (or air that won’t cool)
  • No heat, weak heat, or uneven room temperatures
  • Weak airflow, hot/cold spots, or rooms that won’t balance
  • System running constantly or short cycling
  • Strange noises (buzzing, grinding, rattling, banging, squealing)
  • Musty smells, burning odors, or worsening indoor air quality
  • Ice on refrigerant lines or water near the unit
  • Sudden spikes in energy bills
  • Thermostat issues or inconsistent temperature control


We also offer thermostat installation, ductwork inspection and repair, and indoor air quality services to improve comfort, airflow, and system efficiency.

Residential HVAC Services

If you’re a homeowner, you need dependable comfort without sales pressure. Our residential HVAC services are built around real solutions, not upsells. We’ll explain what’s happening, what matters most, and what option makes the most sense for your budget and long-term reliability.

Home-focused solutions include:

  • Heating and AC repairs that restore comfort quickly
  • Seasonal maintenance and tune-ups
  • System upgrades and energy-saving recommendations
  • Airflow and duct performance improvements
  • Long-term service planning with HVAC maintenance plans

Serving customers searching for Delaware County HVAC services and surrounding areas, S&D Mechanical Heating & Cooling is known for responsive service and reliable home comfort.

Multi-story apartment building with blue and gray siding, trees, and a walkway on a sunny day.

Commercial HVAC Services Built for Uptime

In commercial properties, HVAC issues can disrupt business operations, tenant satisfaction, employee productivity, and even compliance requirements. S&D Mechanical Plumbing & HVAC provides commercial heating and cooling solutions designed to reduce downtime, control costs, and keep facilities operating smoothly year-round.

Facilities We Commonly Support

  • Office Buildings & Retail Centers
  • Apartment Complexes & Condominiums
  • Schools & Municipal Facilities
  • Industrial Warehouses & Manufacturing Plants
  • Medical Offices & Healthcare Buildings
  • Restaurants & Commercial Kitchens

If you manage a facility in the region and need commercial HVAC maintenance or fast repairs, S&D Mechanical Delaware County is ready with dependable service and long-term support.

Commercial HVAC Support Includes

Emergency HVAC Services

Rapid response for critical breakdowns—cooling failures during summer demand or no-heat calls in winter conditions.

Commercial HVAC Maintenance

Planned service schedules to reduce shutdowns, extend equipment life, and improve reliability. Our preventive HVAC maintenance programs are ideal for property managers and facilities teams.

Heating and Air Conditioning Repair (Commercial)

We troubleshoot and repair rooftop units (RTUs), split systems, heat pumps, ductless systems, and more. We focus on the root cause to stop repeat issues.

AC Installation, Replacement & Energy-Efficient Upgrades

For renovations, expansions, aging systems, and performance issues, we provide commercial AC installation and repair, replacements, and energy-efficient upgrades that reduce operating costs.

Ductwork Inspection and Repair + Controls

Airflow problems often come from duct leakage, imbalance, or control issues. We provide ductwork improvements and thermostat installation solutions to stabilize performance.

System Performance + Airflow Optimization

We test performance, inspect ductwork, evaluate controls, and improve airflow for consistent comfort across suites, floors, and zones.

HVAC Heating and Air Conditioning Services FAQ

  • Do you provide both heating and cooling services?

    Yes. We offer complete HVAC Heating and Air Conditioning Services, including repairs, maintenance, and new installations for both heating and cooling equipment.

  • Should I repair or replace my HVAC system?

    If repairs are becoming frequent, efficiency is dropping, or comfort is inconsistent, replacement may be the smarter long-term option. We’ll evaluate the system and explain the pros/cons clearly—no pressure.

  • Do you offer emergency HVAC services?

    Yes. We provide emergency HVAC services for urgent no-heat and no-cooling situations when comfort, safety, and uptime matter most.

  • What types of systems do you service?

    We service central air, furnaces, heat pumps, ductless mini-splits, and many commercial systems. If you’re unsure what you have, we can identify it and guide you.

  • Why is my AC running but not cooling the building?

    Common causes include low refrigerant, dirty coils, airflow restrictions, frozen lines, thermostat issues, or electrical failures. Our diagnostics target the root cause so the issue doesn’t keep coming back.

  • Why is my heater running but not heating well?

    This can be caused by airflow restrictions, ignition problems, sensor issues, thermostat miscommunication, or equipment wear. Our heater repair and maintenance service is designed to pinpoint the issue quickly.

  • How often should I schedule HVAC maintenance?

    Most systems should be serviced twice per year—one seasonal HVAC tune-up for cooling and one for heating. Maintenance improves efficiency, reduces breakdown risk, and extends equipment life.

  • Do you offer HVAC maintenance plans?

    Yes. Our HVAC maintenance plans help you stay ahead of repairs with scheduled service, system checks, and performance optimization.

  • Can you help with indoor air quality and airflow issues?

    Absolutely. We provide indoor air quality services, filter recommendations, airflow testing, and ductwork inspection and repair to improve comfort and air cleanliness.

  • Do you service Delaware County and nearby areas?

    Yes. We’re a local provider known as S&D Mechanical Garnet Valley and across surrounding communities—delivering trusted Delaware County HVAC services for homes and businesses.

Ready to Schedule Heating and Cooling Service?

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Expert tips

Visitor our blog for tips to help you keep your house in top shape.

Why Homeowners and Businesses Choose S&D Mechanical HEATING AND AIR CONDITIONING Services

Locally Owned & Operated

Proudly serving Garnet Valley and the surrounding communities.

Fully Licensed & Insured Technicians

Professional, certified experts who get the job done right.

Emergency Service Available

Fast response when your comfort or safety is on the line.

We are committed to not only restoring your property’s beauty but also safeguarding your landscaping and the environment with every project we take on.