Full Hookup vs Partial Hookup: Which RV Site Do You Actually Need?

The hookup tier you book is one of the few RV decisions that affects both your wallet and your daily routine on a trip — and it’s the one newcomers most often get wrong, usually by overpaying for sewer they don’t need or underestimating water on a dry site. The honest truth is that “full hookup vs partial hookup” doesn’t have a single right answer. It depends entirely on how long you’re staying and how you like to camp.

We’ll lay out exactly what each tier gives you, the real trade-offs, and — most usefully — how to manage water, power, and waste so you can comfortably book the cheaper option when it makes sense. If you want the full technical breakdown of what “full hookup” means down to the amperage, our companion guide on full hookup RV parks covers it; this one is about choosing between the tiers.

The three tiers at a glance#

• Full hookup — electric (30 or 50 amp) + pressurized water + sewer drain at the pad.
• Partial hookup — usually electric + water, but no sewer (sometimes electric only).
• Dry camping / boondocking — no hookups; you run on battery, fresh-water tank, and holding tanks.

The single dividing line between full and partial is almost always sewer. Both tiers usually give you power and water; full adds a drain at the pad so you never touch your holding tanks while parked.

30 amp vs 50 amp: the power tier hidden inside “electric”#

Before you decide between full and partial, understand what the “electric” part actually delivers, because not all shore power is equal. The two standards you’ll meet at the pedestal are 30 amp and 50 amp, and the difference is bigger than the numbers suggest.

A 30-amp service is a single 120-volt leg, which works out to about 3,600 watts total (30 amps × 120 volts). A 50-amp service is two independent 120-volt legs — 50 amps each — for roughly 12,000 watts (50 + 50 = 100 amps at 120 volts). So 50-amp isn’t 67% more power than 30-amp; it’s more than triple. That’s why the distinction matters so much for bigger rigs.

What that means in practice:

• On 30 amp, you’re budgeting power constantly. A single air conditioner runs fine, but add a microwave, a hair dryer, or a space heater and you’ll start tripping the pedestal breaker. One AC unit, lights, the fridge on electric, and charging are about the comfortable ceiling.
• On 50 amp, you can run two air conditioners, the microwave, the water heater on electric, and a coffee maker simultaneously and still have headroom. Large fifth wheels and Class A coaches with dual AC units essentially need 50-amp to be comfortable in summer heat.

Most travel trailers and smaller motorhomes are wired for 30 amp; most large fifth wheels and Class A motorhomes are wired for 50 amp. Match your rig’s inlet to the service you book where you can.

Adapters and “dogbones”#

When the pedestal doesn’t match your cord, you use an adapter — usually a short cable with a plug on one end and a receptacle on the other, nicknamed a dogbone because of its shape. The dogbone style is preferred over rigid pass-through adapters because the cable design dissipates heat better at the connection points.

The critical thing to understand: an adapter never increases your power. A 30-to-50 dogbone lets a 50-amp rig plug into a 30-amp pedestal, but it routes that single 30-amp leg to both legs of your cord — you’re still capped at 3,600 watts total. So a 50-amp rig on 30-amp service usually means running only one AC unit and avoiding stacking high-draw appliances. Going the other way (a 50-to-30 dogbone, a 50-amp rig into a 30-amp source, or a smaller rig into a 50-amp pedestal) is common and safe; you simply can’t draw more than your rig is built for. Carry both a 30-to-50 and a 50-to-30 dogbone and you’re covered at any pedestal you’ll meet.

Field tip: Before you plug in, it’s worth testing the pedestal with a surge protector or energy management system. Faulty campground wiring — reversed polarity, an open ground, or low voltage — is more common than people think and can quietly damage your rig’s electronics. A good surge protector is cheap insurance against an expensive repair.

Water pressure: bring a regulator#

The “water” in full or partial hookup is city water piped to your pad, and it’s the one connection that can damage your RV before you even notice. Campground water pressure varies wildly — some systems deliver a gentle 40 PSI, others spike well past 100 PSI, high enough to blow fittings, crack a water heater, or rupture a hose.

Your RV’s plumbing is happiest around 40–50 PSI, and most experts say never to exceed 60 PSI. The fix is a five-dollar-to-fifty-dollar water pressure regulator that screws onto the spigot ahead of your hose. Inline brass regulators are simplest; adjustable models with a gauge let you dial in the pressure and see what the campground is actually feeding you. Whichever you choose, treat it as non-negotiable equipment — it lives on the spigot at every hookup site, full or partial, and it’s the cheapest insurance in your bay.

What full hookup gets you#

With sewer at the pad, you can:

• Leave the gray tank valve open for continuous drainage, so sinks and showers never back up.
• Take long showers, run the dishwasher, do laundry — without rationing water or watching tank levels.
• Skip the dump station entirely on the way out.

That convenience is real, and for longer stays it’s worth paying for. The cost: full hookup sites run more — often $15–40 a night above a comparable partial site at the same park, and the nicest full-hookup resorts price well above basic campgrounds.

Field tip: Even on full hookups, keep your black tank valve closed until it’s about two-thirds full, then dump. Leaving it open lets liquids drain while solids stack up and dry out — the dreaded “poop pyramid.” Only the gray valve should stay open.

How the sewer connection actually works (and the donut)#

The mechanics of hooking up sewer trip up almost every first-timer, so here’s the real procedure. Your RV’s waste outlet connects to a flexible sewer hose (the corrugated kind, often a brand like Rhino or Waste Master), which runs to the park’s sewer inlet at the pad or to the dump station.

The challenge is sealing that connection. The ground inlet is just an open pipe, and an unsealed hose can pop out under pressure or let sewer gas drift back up. The classic fix is a sewer donut — a thick rubber ring shaped like a doughnut that drops into the inlet and grips your hose elbow for a snug, odor-proof seal. Some inlets are threaded instead, in which case a screw-in adapter fitting does the job. Dump stations are inconsistent — some have threads, some are bare pipe, some are an odd diameter — so carry a kit with a donut, a threaded adapter, and a 90-degree clear elbow, and you’ll be ready for whatever you find.

The dumping order matters: black tank first, gray tank second. You dump the black tank when it’s at least two-thirds full so the volume of water carries the solids out, then dump the gray tank afterward — the soapy gray water flushes the sewer hose clean on its way through. Reverse that order and you’ll be rinsing a fouled hose by hand. Close both valves, disconnect, rinse, and store the hose in a dedicated bumper or bin — never near your fresh-water gear.

What partial hookup gets you (and when it’s plenty)#

A partial site gives you power and water but sends you to the dump station before departure. For most short trips, that’s a non-issue:

• A typical RV’s gray and black tanks hold several days of normal two-person use.
• One stop at the dump station on your way out takes ten minutes.
• Partial sites are cheaper and far more common, especially at state parks, national park concession campgrounds, and older parks.

Partial is the right call when you’re staying one to three nights, when you’re on a travel leg and just need power and water overnight, or when the only sites available are partial and you don’t mind the dump-station trip. We’d happily book partial for a long weekend and put the savings toward the next tank of diesel.

The real cost difference#

The premium for sewer is rarely huge on a per-night basis but adds up over a stay. At a typical private park, a full-hookup site runs roughly $10–25 more per night than the comparable partial site, and at upscale resorts the gap widens. Over a three-night weekend that’s maybe $30–75 — real money, but not life-changing. Over a month-long snowbird stay, choosing full hookup and the convenience that comes with it is usually a rounding error against the monthly rate, and most parks bundle full hookups into monthly sites anyway.

Where the math flips is the one-night travel stop. Paying $20 extra for sewer you’ll use for twelve hours, then dump on the way out regardless, is money lit on fire. The honest framing: pay for sewer when it buys you days of not thinking about tanks, not when it buys you one night of the same chore you’d do at a free dump station.

Field tip: Some parks price full and partial sites identically, especially state parks where the difference is just which loop has sewer lines. When the price is the same, take full hookup every time — there’s no downside. It’s only a real decision when partial is meaningfully cheaper.

When dry or partial is genuinely fine#

It’s worth saying plainly: a huge share of the best camping in America has no sewer at the site, and that’s not a compromise. National-park campgrounds, Forest Service sites, and most state parks are partial or dry by design, and they put you in places no full-hookup resort can. For anything up to about a week, a self-contained rig with a 30-to-40-gallon black tank and a healthy gray tank handles two people comfortably with basic discipline. If you can dump on arrival or departure — or wheel a portable tote to the dump station mid-stay — sewer at the pad is a luxury, not a need. Don’t let the absence of a sewer connection talk you out of the most scenic sites in the country.

Renting an RV for this trip? Compare rigs, prices, and pickup locations on RVshare and Outdoorsy — both let you filter by rig size, dates, and location.

What dry camping gets you#

No hookups at all — and often the best scenery and the lowest price. National-park campgrounds, Forest Service sites, and BLM land are frequently dry, and they put you somewhere full-hookup resorts can’t. The trade is self-sufficiency: you live off your batteries, fresh tank, and holding tanks for the duration. With a modest solar setup, conservative water use, and a full fresh tank on arrival, a couple can comfortably dry camp for several days.

When to choose which — a simple rule#

• One night, travel stop: partial or even dry. Don’t pay for sewer you won’t use.
• Two to three nights: partial is usually plenty; full only if it’s barely more.
• A week or more: full hookup earns its premium through sheer convenience.
• Snowbird or full-time stay: full hookup, and look at monthly rates where the value lives.
• Scenery over amenities: dry camp in the parks and conserve.

Managing water, power, and waste without full hookups#

This is what makes booking the cheaper tier painless.

Water#

On a partial site you have water at the pad, so the only constraint is your gray and black tank capacity, not your fresh supply. Dry camping is the opposite: arrive with a full fresh-water tank, take shorter “navy showers” (wet, off, soap, rinse), and use campground facilities when available. A 40-gallon fresh tank stretches a long way for two people who are deliberate about it.

Power#

Partial sites give you shore power, so power isn’t a worry. Dry camping runs off your house batteries; lithium banks and a few hundred watts of solar will keep lights, the water pump, the furnace fan, and device charging going for days. The big draws — air conditioning and electric heat — generally need shore power or a generator, so plan dry stays for mild weather or carry a generator where it’s allowed.

Waste#

The whole partial-vs-full question comes down to this. Without sewer at the pad:

• Run with the black valve closed always, and the gray valve closed too if you want to monitor levels (or open if you have a sewer connection).
• Empty at the park’s dump station before you leave.
• For longer stays without moving the rig, a portable waste tote (“blue boy”) lets you wheel gray and black water to the dump station and back, so you don’t have to break camp to empty tanks.

Field tip: Add a tank-treatment packet to the black tank after every dump and keep a few gallons of water in it. Liquid carries solids out; a dry tank is a clogged tank waiting to happen — whether you’re on full hookups or emptying at a dump station.

Quick comparison#

	Full hookup	Partial hookup	Dry camping
Electric	Yes (30/50 amp)	Usually yes	No
Water	Yes	Usually yes	No (use tank)
Sewer	Yes, at pad	No (use dump station)	No (use dump station)
Best for	Stays of a week+	1–3 night stays	Scenery, parks, budget
Cost	Highest	Mid	Lowest
Effort	Lowest	Low	Highest

A decision framework by rig type and trip length#

Pulling it together, the right tier is mostly a function of two things: how your rig is built, and how long you’re staying.

By rig type:

• Vans and truck campers are built for self-sufficiency, with small tanks and (usually) good battery setups. Dry and partial sites suit them best; you rarely need sewer for the way these rigs are used.
• Travel trailers and smaller motorhomes (30 amp) are flexible. Partial is fine for short stays; full hookup earns its keep on longer ones. One AC unit means 30-amp service is genuinely adequate.
• Large fifth wheels and Class A coaches (50 amp) lean toward full hookup. Dual AC units, bigger tanks that are a pain to haul to a dump station, and longer typical stays all point the same way — and you’ll want the 50-amp pedestal regardless of the sewer question.

By trip length:

• One night (travel stop): partial or dry. Never pay extra for sewer here.
• Two to three nights: partial is usually plenty; take full only if it’s barely more.
• Four to seven nights: the convenience of full hookup starts to win, especially for two-plus people.
• A week or more / snowbird: full hookup, on a monthly rate where the real value lives.
• Scenery-first national-park trips: dry or partial, and plan your water and tanks around it.

The throughline: book the cheapest tier that lets you camp the way you want without rationing or chores you’ll resent. For most short trips that’s partial; for most long ones it’s full; and for the most beautiful trips it’s often neither.

The bottom line#

Match the tier to the stay, not to habit. Full hookups are a genuine luxury for long and snowbird stays, and the best full-hookup resorts are worth every dollar when you’re parked for weeks. But for short trips, partial hookups save real money for a ten-minute dump-station stop, and dry camping unlocks the most beautiful sites in the country. If you run a large coach, also weigh which parks physically fit you — see our guide to big-rig friendly RV parks.

For regional picks at every tier, browse our state hubs for Arizona, Florida, Texas, and California, or the flagship guides to the best RV parks in Arizona, Florida, Texas, and California.