When to Replace vs Repair: HVAC, Water Heaters, Appliances & More

HVAC systems last 15-20 years in the Texas climate. Apply the 50% rule: if repair costs exceed 50% of replacement cost and the system is over 10 years old, replace it. Also consider replacement if your system uses R-22 refrigerant (phased out, expensive), requires frequent repairs, or your energy bills keep climbing. New high-efficiency systems (16+ SEER) can reduce cooling costs by 20-40% compared to 10-year-old units—significant in Texas summers.

Tank water heaters last 8-12 years; tankless units last 15-20 years. Replace if: the tank is leaking (never repairable), it's over 10 years old and needs major repairs, you see rust in hot water, or recovery time has increased significantly. Boerne's hard water shortens water heater life—if you haven't been flushing annually, expect the lower end of lifespan ranges. Tankless units cost more upfront but provide endless hot water and last longer.

Asphalt shingle roofs last 20-30 years in Texas. Repair makes sense for: localized damage to shingles or flashing, isolated leaks with identifiable sources, and roofs under 15 years old with minor issues. Replace when: damage is widespread, you're seeing multiple leaks, shingles are curling or losing granules throughout, or the roof has been repaired multiple times. If you're planning to sell within 5 years, a new roof adds significant value and marketability.

For appliances, use the 50% rule with age consideration. Refrigerators last 10-18 years, dishwashers 9-13 years, washers and dryers 10-14 years. If an appliance is past the midpoint of its expected life and repair costs exceed 50% of replacement, buy new. Factor in energy efficiency—a new Energy Star refrigerator uses 40% less electricity than models from 15 years ago. For higher-end appliances, repair may make more sense given replacement costs.

Windows last 15-30 years depending on quality. Repair (reseal, reglaze) when: only one or two units have problems, frames are solid, or damage is cosmetic. Replace when: you feel drafts, see condensation between panes, frames are rotting or warped, or single-pane windows remain. In Boerne's climate, upgrading to double-pane Low-E windows can reduce cooling costs 15-25% and dramatically improve comfort.

Beyond the numbers, consider: How long do you plan to stay in this home? New systems add value if selling soon. What's your tolerance for breakdowns? Older systems fail at inconvenient times. Are rebates or tax credits available? Energy-efficient upgrades often qualify for incentives. Get repair quotes from one contractor and replacement quotes from another to avoid bias. Sometimes the peace of mind from new equipment is worth the investment.