You are about to close on a house. The home inspector says the HVAC system is "functional" and the plumbing "has no visible leaks." The report has green checkmarks. Everything looks fine.
Six months later, the compressor dies. The repair estimate is $3,800. A year after that, a hidden slab leak destroys the living room floor — $6,000 in remediation. Or worse — the entire HVAC system needs replacement at $8,000 to $12,000, and the cast iron drain line under the house is deteriorating.
This happens constantly in the Triangle. Not because home inspectors are bad at their jobs, but because a general home inspection and a professional mechanical inspection are two completely different things.
What a General Home Inspector Checks
A licensed home inspector checks whether systems turn on, whether the AC blows cold and the heat blows hot, whether faucets run and toilets flush, and whether there are any visible safety concerns. That is the standard. They are generalists covering roofing, foundation, structure, and mechanical systems all in one visit.
What they typically do not measure on HVAC:
- Refrigerant charge levels
- Static pressure and airflow adequacy
- Compressor amp draw versus manufacturer specs
- Combustion gas analysis on furnaces
- Capacitor degradation
- Heat exchanger integrity
What they typically do not check on plumbing:
- Water pressure at the meter versus at fixtures
- Drain line condition below the slab or underground
- Water heater anode rod condition and sediment levels
- Supply line material and remaining lifespan
- Fixture shut-off valve function
- Sewer line camera inspection
These are the measurements that actually tell you what shape the home's mechanical systems are in — and what is coming next.
What Our Professional HVAC Inspection Covers
Our HVAC inspection evaluates five core areas. Here is what we check and why each one matters for a real estate transaction.
1. Electrical Components
Every HVAC system runs on electricity, even gas furnaces. We measure voltage, amperage, compressor amp draw against the manufacturer's rated load amps, contactor condition, capacitor health, wiring integrity, and control board function.
Why it matters for buyers: A compressor drawing significantly above its rated amps is heading toward failure. Capacitors degrade 2-3% per year — below 10% of rated value, the motor or compressor will struggle to start. These are not things you can see or hear during a walkthrough.
2. Refrigerant System
We measure suction and discharge pressures, calculate superheat and subcooling, inspect refrigerant lines for slow leaks, and verify compressor operation.
Why it matters for buyers: A system low on refrigerant will still cool your house during a 30-minute home inspection. It will not cool your house in July when it is 97 degrees outside. We also flag older systems still running R-22 (Freon), which is no longer manufactured — remaining stock is expensive, and the system is on borrowed time.
3. Airflow Assessment
We measure static pressure at the supply and return plenums, check temperature split across the system, verify airflow at individual vents, and inspect accessible ductwork.
Why it matters for buyers: High static pressure means the blower is fighting restricted airflow — usually from undersized ductwork, dirty coils, or poor duct design. This is the number one hidden problem in Triangle homes, especially in developments built during the 2000-2015 boom where builders prioritized speed over HVAC design.
4. Combustion Safety (Gas Systems)
For gas furnaces, we perform combustion analysis measuring CO, CO2, and O2 levels. We inspect the heat exchanger for cracks, check gas pressure, verify burner flame pattern, and assess venting integrity per NC code.
Why it matters for buyers: A cracked heat exchanger is the most serious finding in any HVAC inspection. It allows combustion gases — including carbon monoxide — into your home's breathing air. This is not something a general home inspector is equipped to diagnose.
5. Mechanical Wear
Blower wheel balance, motor bearing condition, compressor sound, reversing valve operation on heat pumps, defrost board function, drain pan condition, and overall cabinet integrity.
Why it matters for buyers: This is where we estimate remaining system life and identify what is likely to need attention next. A system can be "functional" today and have $2,000-$4,000 in repairs coming within the next 12 months.
What Our Professional Plumbing Inspection Covers
Plumbing problems are some of the most expensive surprises in real estate. A slow slab leak, a failing water heater, or deteriorating drain lines can cost thousands — and none of these show up on a standard home inspection. Here is what we check.
1. Water Supply System
We test water pressure at the main and at individual fixtures, inspect supply line material and condition, check shut-off valves for function, and look for signs of corrosion or mineral buildup.
Why it matters for buyers: Homes built before 2000 may have galvanized steel or polybutylene supply lines — both are ticking time bombs. Galvanized lines corrode from the inside out, restricting flow long before they leak. Polybutylene (gray plastic pipe, common in 1980s-1990s Triangle homes) is prone to sudden failure. Knowing what is in the walls changes your negotiation.
2. Drain and Waste System
We inspect accessible drain lines, test drainage speed at fixtures, check cleanout access, and assess visible pipe material and condition.
Why it matters for buyers: Older Triangle homes may have cast iron drain lines that are 30-50 years old and corroding from the inside. Tree root intrusion is common in established neighborhoods with mature landscaping. A drain that works today can back up next month if the line is 80% blocked.
3. Water Heater Assessment
We check the water heater age, inspect the anode rod (the sacrificial component that prevents tank corrosion), test the T&P relief valve, check for sediment buildup, verify gas connections or electrical supply, and assess overall condition.
Why it matters for buyers: Most tank water heaters last 8-12 years. A 9-year-old water heater with a depleted anode rod is not going to make it to 15. Replacement costs $1,200-$3,000 depending on type and location. Knowing the timeline helps you budget.
4. Fixtures and Connections
We inspect all visible plumbing connections, check under sinks for slow leaks or moisture damage, test toilet stability and flush mechanisms, and verify hose bib condition.
Why it matters for buyers: Slow leaks under sinks cause mold and subfloor damage that is invisible until it is expensive. A toilet rocking on its base may have a failing wax ring that is leaking into the subfloor below.
5. Exterior and Hose Bibs
We check exterior spigots for freeze damage, backflow prevention, and proper function.
Why it matters for buyers: In the Triangle, freeze-thaw cycles crack hose bibs and outdoor pipes. A broken anti-siphon valve can contaminate your drinking water if a garden hose is left connected.
The Advantage of One Company
Most homeowners and realtors schedule HVAC and plumbing inspections separately — different companies, different days, different reports. We do both in a single visit, and the plumbing inspection is free when paired with an HVAC inspection. Our technicians are licensed in HVAC and plumbing, so we catch issues that cross disciplines — like a condensate drain tied into a plumbing drain that is partially blocked, or a water heater gas line with improper clearance from HVAC equipment.
One visit. One report. Free plumbing inspection included. One company that sees the full picture.
When to Order an Inspection
Before closing on a purchase. The inspection report gives you specific findings — not vague "satisfactory" checkboxes — that you can use in negotiations. If the HVAC system has two years of life left and the water heater needs replacement, that changes the math on your offer.
Before listing a home for sale. Sellers benefit from having a professional inspection report showing systems are in good working order. It removes a negotiation lever for buyers and builds confidence in the listing.
After purchasing a home. If you skipped the specialized inspection during due diligence, get one now. It establishes a baseline so you know what you bought and what to plan for.
Before the warranty expires. If the HVAC system is approaching the end of its manufacturer warranty (usually 5-10 years), catch failing components while they are still covered.
Triangle-Specific Concerns
The Triangle housing market has patterns that make professional inspections especially important:
- Homes built 2000-2015 are now in the breakdown zone. Original HVAC equipment is 10-25 years old, and builder-grade systems were sized for cost, not longevity. Plumbing in these homes is typically PEX or CPVC — generally reliable, but connections and valves need checking.
- Older homes inside the Beltline and in established Durham neighborhoods may have cast iron drains, galvanized supply lines, and HVAC systems that have been patched multiple times.
- Raleigh's pollen seasons coat outdoor HVAC coils and clog filters, reducing efficiency by 10-20% and accelerating wear.
- Hot, humid summers reaching 95°F+ mean AC systems run hard from May through September. A marginal system passes inspection in March and fails in July.
- Hard water in parts of Johnston and Harnett counties accelerates water heater sediment buildup and shortens fixture life.
Pricing
- HVAC inspection: $350 for the first unit, $300 for each additional unit
- Plumbing inspection: Free
You receive a written report with findings, photos, and prioritized recommendations for both HVAC and plumbing systems. We serve Apex, Cary, Raleigh, Durham, Holly Springs, Fuquay-Varina, and the surrounding Triangle area with same-day availability most days.
For Realtors
If you are a realtor working the Triangle market, we are happy to be your go-to mechanical inspection resource. One call gets both HVAC and plumbing inspected. We provide clear, professional reports that help your clients make informed decisions — whether they are buying or selling. No upselling, no scare tactics. Just an honest assessment of what the systems need.
Call us at 919-926-1475 to book an inspection.
