Garbage Disposal Replacement Pricing for Plumbers
Plumbers should charge $250–$500 for a garbage disposal replacement using a standard 1/2 HP or 3/4 HP unit, and $400–$800 for a premium 1 HP model with batch feed or advanced features. New installations where no disposal existed previously run $350–$700 due to additional drain modifications and electrical work. Labor time is typically 30–90 minutes.
Garbage disposal replacements are quick, profitable jobs that round out your service call revenue. While the individual ticket is smaller than major plumbing projects, disposals are high-frequency calls that keep your trucks moving and often lead to additional work when you spot other kitchen plumbing issues during the visit. Here is how to price disposal work for maximum profitability.
Standard Disposal Replacement Pricing
A standard garbage disposal replacement — removing the old unit and installing a new one on the existing mounting assembly — is a 30–60 minute job for an experienced plumber. The most common residential disposals are 1/2 HP and 3/4 HP continuous feed models. An InSinkErator Badger 5 (1/2 HP) runs $80–$120 wholesale, while the more popular Evolution Compact (3/4 HP) costs $150–$250. Moen and Waste King offer competitive models at similar price points. Add $20–$40 for a new splash guard, dishwasher drain connector, and plumber's putty. Your total to the homeowner should be $250–$500 for a standard replacement. If the existing mounting hardware (like the InSinkErator Quick Lock system) is compatible with the new unit, the swap takes under 30 minutes — but always include time for testing and checking for leaks.
New Disposal Installation (Where None Existed)
Installing a garbage disposal where one was never previously installed requires additional work beyond a simple replacement. You will need to modify the existing drain to accommodate the disposal mounting assembly, which may involve replacing the sink strainer basket and tailpiece. If the existing drain is a single-bowl configuration, you may need to re-plumb the trap and drain connections. Verify that there is an electrical outlet under the sink — if not, the homeowner needs an electrician to add a switched outlet or you need to install a power cord kit (some disposals come with one, others do not). New installations take 60–90 minutes and should be priced at $350–$700 depending on the amount of drain modification required. Always check for a dishwasher drain connection and knock out the dishwasher inlet on the disposal if one is connected.
Common Issues and Add-On Services
Disposal calls often reveal other kitchen plumbing issues that create add-on revenue. Leaking basket strainers on the adjacent bowl are common — replacing one adds $75–$150 to the job. Corroded or worn P-traps and tailpieces should be replaced while you are under the sink ($50–$100 in parts and labor). Slow-draining kitchen sinks often have buildup in the drain line downstream of the disposal — offer a drain cleaning service for $150–$250. Dishwasher drain connections that are not looped above the disposal (a code requirement to prevent backflow) can be corrected for $50–$100. Training your technicians to look for these opportunities during disposal calls can increase your average ticket from $350 to $500 or more.
Disposal Pricing Strategy and Profitability
Garbage disposal replacements are best priced as flat-rate jobs rather than time-and-materials. Flat-rate pricing gives the customer certainty and lets you capture the efficiency benefit of a quick installation. Your flat rate should cover the unit cost, your labor (even if the job only takes 30 minutes), drive time, truck stock overhead, and profit margin. Many successful plumbing companies price disposal replacements at 2.5–3x their wholesale unit cost — so an $80 Badger 5 generates a $200–$240 equipment charge plus $100–$150 in labor for a $300–$400 total. The key to profitability is volume: at 3–5 disposal calls per week, this service line generates $50,000–$100,000 in annual revenue with minimal material risk.
Frequently Asked Questions
Charge $250–$500 for a standard garbage disposal replacement with a 1/2 HP or 3/4 HP unit. Premium 1 HP models like the InSinkErator Evolution Excel should be priced at $400–$800 installed. New installations where no disposal previously existed run $350–$700 due to additional drain modifications. Use flat-rate pricing for customer certainty.
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