Common HVAC & Plumbing Problems in Older Homes in Memphis
From historic bungalows and cottages to mid-century homes, Memphis has a variety of homes from different eras—each with its own HVAC and plumbing systems. While Memphis’ homeownership rate is over 44%, many homeowners don’t consider the age of their home comfort systems until something goes wrong.
Learning about common HVAC problems and plumbing issues—from aging, lead, or corroded pipes and service lines to improperly sized HVAC equipment and leaky ducts—can help you catch issues early and avoid unexpected breakdowns, water damage, or disruptive repairs.
In this guide, Conway Services provides practical insights into common old home problems, which issues need immediate attention, and how to prioritize improvements effectively.
Lead in Plumbing and Tap Water Risks
Lead contamination is a serious and common plumbing problem in Tennessee, with MLGW estimating that about 24,000 customer homes have lead service lines. Water can become contaminated as it passes through plumbing components.
Lead can enter through:
Lead service lines
Lead-containing solder
Older fixtures or fittings
Galvanized lines downstream from lead plumbing
The Tennessee Department of Environment and Conservation notes that lead service lines and lead-containing plumbing were used into the 1950s, especially in older and historic areas. If you suspect lead plumbing or lines, or you’re unsure what your home has, review MLGW’s inventory of water lines, ask about line material or water testing, and use certified filters rated for lead reduction.
Which Old Pipe Materials Create the Most Concern?
Lead Pipes and Service Lines
Lead pipes and service lines can allow lead into drinking water, which can pose a health risk. Testing and replacement should follow current MLGW, Tennessee, and EPA guidance.
Galvanized Steel
Internal corrosion can gradually restrict galvanized steel pipes, reducing pressure and causing discolored water, buildup, and leaks at joints. If it was previously connected downstream of lead service lines, it may be classified as galvanized and require replacement.
Cast-Iron Drain and Sewer Pipe
Cast-iron drain and sewer pipes can develop internal scaling, corrosion, cracks, bellied sections, or root intrusion. Unlike supply-line problems, which affect water coming into your home, drain and sewer problems affect wastewater leaving it.
Copper
Older copper plumbing is not automatically a problem. Many pipes remain serviceable for years, though pinhole leaks, corrosion, and weakened or failed joints can develop over time.
Mixed or Patched Materials
Older homes may contain several pipe materials joined during different renovations or repairs. Improper transitions can contribute to corrosion, water leaks, or restricted flow, making it useful to note the material, location, and visible condition of each accessible section.
Other Common Plumbing Problems in Older Memphis Homes
Outdated or Deteriorated Pipes
Repeated leaks, low pressure, rust-colored water, scaling, brittle drains, or layers of past repairs can indicate broader pipe deterioration that may need more than another patch.
Corrosion, Mineral Deposits, and Water Chemistry
Corrosion or mineral buildup may show up as reduced water pressure, discolored water, metallic tastes, recurring leaks, or visible crust around fixtures. These signs may mean your pipes need a closer look from an experienced plumber.
Poor Pipe Location or Access
Pipes in exterior walls, crawl spaces, beneath slabs, or far from fixtures can be harder to reach and maintain. Long runs may also delay hot water, while poor access can make even small repairs more involved.
Old Drain and Sewer Configurations
Older sewer and drain layouts may suffer from inadequate slope, aging vents, root intrusion, or repeated clogs. Later additions and poorly placed cleanouts can also create access and drainage problems.
Why HVAC Systems in Older Homes Have Special Problems
The biggest challenge with HVAC in older homes is often not a single failed part or spotty maintenance record. Many older homes were built before central HVAC systems were common, so later systems may have been added around the original layout rather than designed with it.
That can create:
Too few return ducts
Poor register placement
Leaky or restricted ductwork
Inadequate insulation
Improper equipment sizing
Ducts exposed to hot attics or damp crawl spaces
The result may be uneven temperatures between rooms, long run times, high humidity, or uncomfortable upper floors. Oversized cooling equipment can also reduce moisture control, put more wear and tear on your equipment, and increase energy use.
How Leaky Ducts Affect Older Memphis Homes
Leaky ducts allow conditioned air to escape through gaps, loose joints, damaged sections, or poorly sealed registers. Losses are especially significant when ducts run through attics, crawl spaces, garages, or other unconditioned areas.
Watch for:
Weak airflow
Uneven room temperatures
Higher heating or cooling use
Dust around registers
Visible duct gaps
ENERGY STAR says duct leakage can reduce heating and cooling efficiency by up to 20%. A professional inspection from Conway Services can help pinpoint leakage and offer personalized guidance on common HVAC problems and solutions.
Which Problems Require Immediate Attention?
Plumbing Warning Signs | HVAC Warning Signs |
|---|---|
Suspected lead service line | Burning smell |
Active or recurring leaks | Carbon monoxide alarm alerts |
Sewage backup | Cracked or damaged combustion equipment |
Sudden pressure loss | Repeated breaker trips |
Rust-colored or unusual water | Water leaking near electrical components |
Damp walls, floors, or crawl spaces | Persistent indoor humidity |
Repeated drain blockages | Visible disconnected ducts |
Gas or sewer odors | No heating or cooling during dangerous weather |
How Homeowners Can Prioritize Improvements
Address Health and Safety First
Start with problems that could affect your health, safety, or home, including:
Lead or galvanized service lines
Carbon-monoxide concerns
Active sewage or water leaks
Unsafe combustion equipment
Electrical hazards
Serious moisture intrusion
Stop Damage and System Failure
Next, address problems that can cause property damage or leave major systems unusable:
Corroded supply pipes
Failing sewer lines
Clogged condensate drains
Disconnected ducts
Repeated HVAC shutdowns
Crawl-space moisture
Improve Comfort and Efficiency
Once urgent problems are handled, improve comfort and efficiency with:
Duct sealing
Air balancing
Insulation and air sealing
Equipment sizing
Thermostat improvements
Hot-water delivery changes
Planned pipe replacement
We also recommend keeping a home-systems record with:
Pipe materials
Service-line information
HVAC model and serial numbers
Installation dates
Repair history
Water-quality reports
Sewer-camera findings
Permit records
When to Schedule a Professional Old Home Assessment
Older homes can hide problems that are easy to miss until they start causing repeated repairs or comfort issues. Consider an assessment for common HVAC and plumbing issues in old homes when you have:
Unknown pipe materials
Frequent plumbing repairs or drain backups
Poor water pressure
HVAC equipment over 10 years old
Uneven temperatures or ducts in unconditioned spaces
A planned renovation or older-home purchase
For help evaluating your home, call Conway Services at 901-248-1961 or schedule online.