$899
Probably the best fridge you can find that's bigger than a mini-fridge and smaller than an apartment sized fridge. Excellent if you want more freezer space which I find helpful to keep food longer. Great use of space and energy saving. A bigger freezer will use more energy, but it might be worth it to you and it shouldn't substantially affect your electric bill.
$287
Uses magnetism to heat your cookware, which has to be steel or iron or it won't work. Unbelievably fast, safe and easy to use. Can set by heat level or temperature. Can't imagine using electric or gas for cooking anymore. Induction is used in many other parts of the world and by professionals. Requires electricity and should be set up on its own breaker as it can draw a lot of power on the high settings. Don't turn up too high or it will burn your food. I typically cook most things on heat level "3" and use the temperature setting to heat water to a specific temperature for making tea. Cooking is a breeze and takes no time at all.
$150
Using induction requires something magnetic. I also wanted something eco friendly, safe, and easy to clean. This cookware is a unique combination of stainless steel base with nonstick ceramic coating and made with safe materials. Cleanup is a breeze, style is great, cost is good, especially when on sale. I picked up the 10pc. Minneapolis but there are different options depending on what you use on Target, Amazon, or the GreenPan website. Tip: Can be used with any cooktop (induction, gas, electric), and there are other models in aluminum which offer more options but will not work with induction so pay attention to the labels and materials.
$45
Most tiny houses don't have one, but if you cook a lot, especially oily or pungent food, it helps to clear things out and keep your cooktop and painted walls nice. Mine is recirculating using a filter (ventless), but you can also vent to the outside. This is really an optional item, but it's inexpensive and has enough benefits to warrant the purchase/installation in my opinion.
$1,500
Better reviews/quality/reliability than other combos. Takes up much less space than stackable. Holds a pretty good size load of laundry (e.g. week's worth of clothes, sheets, several towels). Lots of different modes and configuration to do what you want it to do. Because of how it works, washing usually takes about 1.5 hours and drying 2.5-3 hours. For smaller loads there is a wash/dry mode which takes about 2.5 hours, but has little control to how it washes/dries. Does not require venting, only electricity, incoming hot/cold water, outgoing water drainage. I decided to go for the more expensive LG and it's been a fantastic product so far.
$1,100
Mini-splits are extremely popular in many other parts of the world and take up very little space. They do no require ducts like central air. You can get A/C only or with a heat pump. Compressor goes outside, unit that blows the air is inside, and everything is remote controlled. TIP: You can determine the correct BTU based on the square footage of your space and geographic location. I would recommend for places that get hot in summer (i.e. Texas), but maybe not necessary in places like California or Colorado. A/C is energy intensive and the units are expensive, so if you don't need one, just go for a fan or open your windows. Space heaters, heating panels, or wood burning stoves can be used for heat during colder weather and are cheaper.
$525
Tankless water heaters provide "instant" and "unlimited" hot water without a physical tank which saves a ton of space. This unit is made for RVs, so it should hold up during travel. Works off propane. Inside control panel to set desired temperature level. Heats up within 1-2 minutes and lasts for as long as you have propane. I can go about 3 months before I need to refuel. TIP: I originally was going to use an electric tankless, but no company would back their warranty if installed in a mobile home. They also use a lot of electricity which may limit simultaneous usage of other appliances while showering, doing laundry, or washing dishes. Have an on/off switch installed inside to turn the water heater on/off in case of emergency and also to turn off when not in use overnight or when away to extend the life of the unit.
$960
Most popular tiny house composting toilet. Supports on or off grid. Separates solids from liquids which keeps it from smelling (smells like dirt). Small amount of electricity required to run the internal fan for venting. Liquids emptied 3-7 days depending on usage and can actually be set up to drain directly into septic or tank by removing the front piece that holds the tank and piping into septic/RV tanks. I use coconut coir for compost which lasts for several months depending on usage. I was hesitant about the toilet, but really like it. Only annoying things are emptying the liquid bucket and occasionally getting fruit flies through the venting. Just keep clean and empty regularly and/or use essential oils like citronella or lemongrass. TIP: Not needing to empty gray/black water from your toilet provides more options for tiny house placement.
$269
Sleek, ceiling fan that has a built in light with dimmer and 4 speed modes. Remote controlled. Can be reversed, but must take off the light cap. Silent even on highest setting. Great option for air flow throughout the main part of the house and saves money instead of A/C.